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Publication: Nelson, Joseph S., Edwin J. Crossman, H. Espinosa-Pérez, L. T. Findley, C. R. Gilbert, et al., eds. 2004. Common and scientific names of fishes from the United States, Canada, and Mexico, Sixth Edition. American Fisheries Society Special Publication, no. 29. ix + 386.

ITIS records citing this publication
 
 Kingdom Animalia
  Ablennes hians (Valenciennes in Cuvier and Valenciennes, 1846) -- valid -- agujón sable, flat needlefish, sauro atlántico
  Aboma etheostoma Jordan and Starks in Jordan, 1895 -- valid -- gobio escamoso, scaly goby
  Abudefduf declivifrons (Gill, 1862) -- valid -- Mexican night sergeant, petaca mexicana
  Abudefduf saxatilis (Linnaeus, 1758) -- valid -- petaca rayada, píntano, sergeant major
  Abudefduf taurus (Müller and Troschel in Schomburgk, 1848) -- valid -- night sergeant, petaca toro, píntano toro
  Abudefduf troschelii (Gill, 1862) -- valid -- Pacific sergeant major, Panamic sergeant major, petaca banderita
  Acantharchus pomotis (Baird, 1855) -- valid -- mud sunfish
  Acanthemblemaria aspera (Longley, 1927) -- valid -- roughhead blenny
  Acanthemblemaria balanorum Brock, 1940 -- valid -- clubhead barnacle blenny, tubícola espinudo
  Acanthemblemaria chaplini Böhlke, 1957 -- valid -- papillose blenny, sapito papiloso
  Acanthemblemaria crockeri Beebe and Tee-Van, 1938 -- valid -- browncheek blenny, tubícola cachetón
  Acanthemblemaria greenfieldi Smith-Vaniz and Palacio, 1974 -- valid -- stalk blenny, tubícola palito
  Acanthemblemaria macrospilus Brock, 1940 -- valid -- barnacle blenny, barnacle blenny, Mexican barnacle blenny, tubícola mexicano
  Acanthemblemaria mangognatha Hastings and Robertson, 1999 -- valid -- Revillagigedo barnacle blenny, tubícola mango
  Acanthemblemaria spinosa Metzelaar, 1919 -- valid -- sapito espinoso, spinyhead blenny, spinyhead blenny, tubícola cabeza espinosa
  Acanthocybium solandri (Cuvier in Cuvier and Valenciennes, 1832) -- valid -- peto, thazard-bâtard, wahoo
  Acanthogobius flavimanus (Temminck and Schlegel, 1845) -- valid -- gobio extranjero, yellowfin goby
  Acantholumpenus mackayi (Gilbert, 1896) -- valid -- blackline prickleback, pighead prickleback
  Acanthostracion quadricornis (Linnaeus, 1758) -- valid -- scrawled cowfish, torito común, torito cornudo
  Acanthuridae -- valid -- cirujanos, poissons-chirurgiens, surgeonfishes, tangs
  Acanthurus achilles Shaw, 1803 -- valid -- Achilles tang, cirujano encendido, redspot surgeonfish, redspot tang, redtail surgeonfish
  Acanthurus bahianus Castelnau, 1855 -- valid -- barbero, cirujano pardo, ocean surgeon
  Acanthurus chirurgus (Bloch, 1787) -- valid -- barbero rayado, cirujano rayado, doctorfish
  Acanthurus coeruleus Bloch and Schneider, 1801 -- valid -- barbero azul, blue tang, cirujano azul
  Acanthurus nigricans (Linnaeus, 1758) -- valid -- cirujano cariblanco, goldrim surgeonfish, whitecheek surgeonfish
  Acanthurus triostegus (Linnaeus, 1758) -- valid -- cirujano reo, convict surgeonfish, convict tang, convictfish
  Acanthurus xanthopterus Valenciennes in Cuvier and Valenciennes, 1835 -- valid -- cirujano aleta amarilla, yellowfin surgeonfish
  Acentronura dendritica (Barbour, 1905) -- valid -- caballito enano, caballito pipa, pipehorse, prehensile-tailed pipefish, seahorse pipefish
  Achiridae -- valid -- American soles, lenguados suelas, scrawled soles, soles américaines
  Achirus klunzingeri (Steindachner, 1880) -- valid -- brown sole, Brown Sole, suela plomiza
  Achirus lineatus (Linnaeus, 1758) -- valid -- acedía rayada, lined sole, Lined Sole, suela listada
  Achirus mazatlanus (Steindachner, 1869) -- valid -- Mexican sole, Pacific lined sole, Pacific Lined Sole, tepalcate
  Achirus scutum (Günther, 1862) -- valid -- comal, network sole, Network Sole
  Achirus zebrinus Clark, 1936 -- valid -- suela cebra, Tehuantepec sole, Tehuantepec Sole
  Acipenser brevirostrum Lesueur, 1818 -- valid -- shortnose sturgeon
  Acipenser fulvescens Rafinesque, 1817 -- valid -- esturgeon jaune, lake sturgeon
  Acipenser medirostris Ayres, 1854 -- valid -- esturión verde, green sturgeon
  Acipenser oxyrinchus Mitchill, 1815 -- valid -- Atlantic sturgeon, esturgeon noir, esturión del Atlántico, Gulf sturgeon
  Acipenser transmontanus Richardson, 1836 -- valid -- esturión blanco, white sturgeon
  Acipenseridae -- valid -- esturgeons, esturiones, sturgeons
  Acrocheilus alutaceus Agassiz and Pickering in Agassiz, 1855 -- valid -- chiselmouth
  Acropomatidae -- valid -- farolitos, lanternbellies, macondes, temperate ocean-basses
  Actinopterygii -- valid -- poisson épineux, poissons à nageoires rayonnées, ray-finned fishes, spiny rayed fishes
  Acyrtops amplicirrus Briggs, 1955 -- valid -- chupapiedra nariz crestada, flarenostril clingfish
  Acyrtops beryllinus (Hildebrand and Ginsburg, 1926) -- valid -- emerald clingfish, pequita esmerilada
  Acyrtus artius Briggs, 1955 -- valid -- chupapiedra papilosa, papillate clingfish, pequita gusarapo
  Acyrtus rubiginosus (Poey, 1868) -- valid -- chupapiedra roja, pequita roja, red clingfish
  Adinia xenica (Jordan and Gilbert, 1882) -- valid -- diamond killifish
  Aetobatus narinari (Euphrasen, 1790) -- valid -- bonnetray, chucho pintado, obispo, spotted eagle ray
  Agonidae -- valid -- alligatorfishes, bandidos, poachers, poissons-alligators, sea poachers
  Agonopsis sterletus (Gilbert in Jordan and Evermann, 1898) -- valid -- bandido narigón, southern spearnose poacher
  Agonopsis vulsa (Jordan and Gilbert, 1880) -- valid -- northern spearnose poacher
  Agonostomus monticola (Bancroft in Griffith and Smith, 1834) -- valid -- dajao, mountain mullet, trucha de tierra caliente
  Agosia chrysogaster Girard, 1856 -- valid -- longfin dace, pupo panzaverde
  Ahlia egmontis (Jordan, 1884) -- valid -- key worm eel, safío de llave, tieso de cayo
  Albatrossia pectoralis (Gilbert, 1892) -- valid -- giant grenadier, giant rattail
  Albula nemoptera (Fowler, 1911) -- valid -- macabí de hebra, shafted bonefish
  Albula vulpes (Linnaeus, 1758) -- valid -- bonefish, macabí
  Albulidae -- valid -- bananafishes, bananes de mer, bonefishes, ladyfishes, macabíes
  Albuliformes -- valid
  Alectis ciliaris (Bloch, 1787) -- valid -- African pompano, flechudo, pámpano de hebra, threadfin
  Alectrias alectrolophus (Pallas, 1814) -- valid -- stone cockscomb
  Alectridium aurantiacum Gilbert and Burke, 1912 -- valid -- lesser prickleback
  Alepisauridae -- valid -- cavalos, lancetfishes, lanzones
  Alepisaurus brevirostris Gibbs, 1960 -- valid -- shortnose lancetfish
  Alepisaurus ferox Lowe, 1833 -- valid -- conejo de lo alto, lanzón picudo, longnose lancetfish
  Algansea aphanea Barbour and Miller, 1978 -- valid -- pupo del Ayutla, riffle chub
  Algansea avia Barbour and Miller, 1978 -- valid -- pupo de Tepic, remote chub
  Algansea barbata Alvarez and Cortés, 1964 -- valid -- Lerma chub, pupo del Lerma
  Algansea lacustris Steindachner, 1895 -- valid -- acúmara, Pátzcuaro chub
  Algansea monticola Barbour and Contreras-Balderas, 1968 -- valid -- mountain chub, pupo del Juchipila
  Algansea popoche (Jordan and Snyder, 1899) -- valid -- popocha, popoche chub
  Algansea tincella (Valenciennes in Cuvier and Valenciennes, 1844) -- valid -- pupo del Valle, spottail chub
  Alloclinus holderi (Lauderbach in Jordan and Starks, 1907) -- valid -- island kelpfish, trambollo isleño
  Allodontichthys hubbsi Miller and Uyeno, 1980 -- valid -- mexcalpique de Tuxpan, whitepatch splitfin
  Allodontichthys polylepis Rauchenberger, 1988 -- valid -- finescale splitfin, mexcalpique escamitas
  Allodontichthys tamazulae Turner, 1946 -- valid -- mexcalpique de Tamazula, peppered splitfin
  Allodontichthys zonistius (Hubbs, 1932) -- valid -- bandfin splitfin, mexcalpique de Colima
  Allolumpenus hypochromus Hubbs and Schultz, 1932 -- invalid -- Y-prickleback
  Alloophorus robustus (Bean, 1892) -- valid -- bulldog goodeid, chegua
  Allosmerus elongatus (Ayres, 1854) -- valid -- whitebait smelt
  Allothunnus fallai Serventy, 1948 -- valid -- atún lanzón, slender tuna, thon élégante
  Allotoca catarinae (de Buen, 1942) -- valid -- Catarina allotoca, tiro Catarina
  Allotoca diazi (Meek, 1902) -- valid -- chorumo, Patzcuaro allotoca
  Allotoca dugesii (Bean, 1887) -- valid -- bumblebee allotoca, tiro chato
  Allotoca goslinei Smith and Miller, 1987 -- valid -- banded allotoca, tiro listado
  Allotoca maculata Smith and Miller, 1980 -- valid -- blackspot allotoca, tiro manchado
  Allotoca meeki (Alvarez, 1959) -- valid -- tiro de Zirahuén, Zirahuen allotoca
  Allotoca zacapuensis Meyer, Radda and Domínguez, 2001 -- valid -- tiro de Zacapu, Zacapu allotoca
  Alopias pelagicus Nakamura, 1935 -- valid -- pelagic thresher, pelagic thresher shark, zorro pelágico
  Alopias superciliosus (Lowe, 1841) -- valid -- bigeye thresher, tiburón zorro ojón, zorro ojón
  Alopias vulpinus (Bonnaterre, 1788) -- valid -- renard marin, thresher shark, tiburón zorro común, zorro
  Alopiidae Bonaparte, 1838 -- valid -- requins-renards, thresher sharks, tiburones zorro
  Alosa aestivalis (Mitchill, 1814) -- valid -- alose d'été, blueback herring, blueback shad
  Alosa alabamae Jordan and Evermann in Evermann, 1896 -- valid -- Alabama shad, Gulf shad, Ohio shad
  Alosa chrysochloris (Rafinesque, 1820) -- valid -- blue herring, golden shad, green herring, river herring, skipjack, skipjack herring, skipjack shad
  Alosa mediocris (Mitchill, 1814) -- valid -- bonejack, fall herring, freshwater taylor, hickory jack, hickory shad, shad herring
  Alosa pseudoharengus (Wilson, 1811) -- valid -- alewife, bigeye herring, branch herring, freshwater herring, gaspareau, gray herring, grayback, kyak, sawbelly, white herring
  Alosa sapidissima (Wilson, 1811) -- valid -- alose savoureuse, American shad, Atlantic shad, common shad, sábalo americano, white shad
  Alphestes afer (Bloch, 1793) -- valid -- guaseta, mutton hamlet
  Alphestes immaculatus Breder, 1936 -- valid -- guaseta del Pacífico, Pacific mutton hamlet
  Alphestes multiguttatus (Günther, 1867) -- valid -- guaseta rayada, rivulated mutton hamlet
  Aluterus heudelotii Hollard, 1855 -- valid -- dotterel filefish, lija jaspeada
  Aluterus monoceros (Linnaeus, 1758) -- valid -- lija barbuda, unicorn filefish
  Aluterus schoepfii (Walbaum, 1792) -- valid -- lija anaranjada, lija naranja, orange filefish, orange filefish
  Aluterus scriptus (Osbeck, 1765) -- valid -- lija trompa, scrawled filefish, unicornfish
  Ambloplites ariommus Viosca, 1936 -- valid -- shadow bass
  Ambloplites cavifrons Cope, 1868 -- valid -- Roanoke bass
  Ambloplites constellatus Cashner and Suttkus, 1977 -- valid -- Ozark bass
  Ambloplites rupestris (Rafinesque, 1817) -- valid -- crapet de roche, rock bass
  Amblycirrhitus pinos (Mowbray in Breder, 1927) -- valid -- halcón rayadito, rayadito, redspotted hawkfish
  Amblyopsidae Bonaparte, 1846 -- valid -- amblyopes, cave fishes, cavefishes, peces cavernícolas
  Amblyopsis rosae (Eigenmann, 1898) -- valid -- Ozark cavefish
  Amblyopsis spelaea DeKay, 1842 -- valid -- northern cavefish
  Amblyraja radiata (Donovan, 1808) -- valid -- raie épineuse, starry skate, thorny skate
  Ameca splendens Miller and Fitzsimons, 1971 -- valid -- butterfly splitfin, mexcalpique mariposa
  Ameiurus brunneus Jordan, 1877 -- valid -- snail bullhead
  Ameiurus catus (Linnaeus, 1758) -- valid -- white bullhead, white catfish
  Ameiurus melas (Rafinesque, 1820) -- valid -- bagre torito negro, black bullhead
  Ameiurus natalis (Lesueur, 1819) -- valid -- bagre torito amarillo, barbotte jaune, yellow bullhead
  Ameiurus nebulosus (Lesueur, 1819) -- valid -- barbotte brune, brown bullhead
  Ameiurus platycephalus (Girard, 1859) -- valid -- flat bullhead
  Ameiurus serracanthus (Yerger and Relyea, 1968) -- valid -- spotted bullhead
  Amia calva Linnaeus, 1766 -- valid -- bowfin, poisson-castor
  Amiidae -- valid -- amias, bowfin, bowfins, poissons-castors
  Ammocrypta beanii Jordan, 1877 -- valid -- naked sand darter
  Ammocrypta bifascia Williams, 1975 -- valid -- Florida sand darter
  Ammocrypta clara Jordan and Meek, 1885 -- valid -- western sand darter
  Ammocrypta meridiana Williams, 1975 -- invalid -- southern sand darter
  Ammocrypta pellucida (Putnam, 1863) -- valid -- dard de sable, eastern sand darter
  Ammocrypta vivax Hay, 1882 -- valid -- scaly sand darter
  Ammodytes americanus DeKay, 1842 -- valid -- American sand lance, inshore sand lance, lance, lançon d'Amérique, sand eel
  Ammodytes dubius Reinhardt, 1837 -- valid -- lançon du nord, northern sand lance, offshore sand lance, sand eel
  Ammodytes hexapterus Pallas, 1814 -- valid -- Pacific sand lance
  Ammodytidae -- valid -- lançons, peones, sand lances
  Ammodytoides gilli (Bean, 1895) -- valid -- Panamic sand lance, peón panámico
  Amphistichus argenteus Agassiz, 1854 -- valid -- barred surfperch, mojarra de bandas
  Amphistichus koelzi (Hubbs, 1933) -- valid -- calico surfperch, mojarra angaripola
  Amphistichus rhodoterus (Agassiz, 1854) -- valid -- redtail surfperch
  Anablepidae Garman, 1895 -- valid -- anablepids, cuatrojos, four-eyed fishes, four-eyes, poissons à quatre yeux
  Anarchias galapagensis (Seale, 1940) -- valid -- hardtail moray, morena cola dura
  Anarchias similis (Lea, 1913) -- valid -- morena enana, morena pigmea, pygmy moray
  Anarchopterus criniger (Bean and Dresel, 1884) -- valid -- fringed pipefish, pez pipa orlado
  Anarchopterus tectus (Dawson, 1978) -- valid -- insular pipefish, pez pipa isleño
  Anarhichadidae Bonaparte, 1846 -- valid -- peces lobo, poissons-loups, wolffishes
  Anarhichas denticulatus Krøyer, 1845 -- valid -- northern wolffish
  Anarhichas lupus Linnaeus, 1758 -- valid -- Atlantic wolffish, loup atlantique
  Anarhichas minor Olafsen, 1772 -- valid -- loup tacheté, spotted wolffish
  Anarhichas orientalis Pallas, 1814 -- valid -- Bering wolffish
  Anarrhichthys ocellatus Ayres, 1855 -- valid -- northern wolffish, wolf-eel
  Anchoa analis (Miller, 1945) -- valid -- anchoa aletona del Pacífico, longfin Pacific anchovy
  Anchoa argentivittata (Regan, 1904) -- valid -- anchoa plateada, Regan's anchovy, silverstripe anchovy
  Anchoa belizensis (Thomerson and Greenfield, 1975) -- valid -- anchoa beliceña, Belize anchovy
  Anchoa cayorum (Fowler, 1906) -- valid -- anchoa de cayo, key anchovy, manjúa de los cayos
  Anchoa colonensis Hildebrand, 1943 -- valid -- anchoa rayita, Carribean anchovy, narrow-striped anchovy, narrowstriped anchovy
  Anchoa compressa (Girard, 1858) -- valid -- anchoa alta, deepbody anchovy
  Anchoa cubana (Poey, 1868) -- valid -- anchoa cubana, Cuban anchovy, manjúa cubana
  Anchoa curta (Jordan and Gilbert, 1882) -- valid -- anchoa chaparra, short anchovy
  Anchoa delicatissima (Girard, 1854) -- valid -- anchoa delicada, slough anchovy
  Anchoa exigua (Jordan and Gilbert, 1882) -- valid -- anchoa fina, slender anchovy
  Anchoa helleri (Hubbs, 1921) -- valid -- anchoa del Golfo, Gulf anchovy, Heller's anchovy
  Anchoa hepsetus (Linnaeus, 1758) -- valid -- anchoa legítima, broad-striped anchovy, manjúa listada, striped anchovy
  Anchoa ischana (Jordan and Gilbert, 1882) -- valid -- anchoa chicotera, sharpnose anchovy, slender anchovy
  Anchoa lamprotaenia Hildebrand, 1943 -- valid -- anchoa ojuda, big-eye anchovy, bigeye anchovy, longnose anchovy, manjúa ojuda
  Anchoa lucida (Jordan and Gilbert, 1882) -- valid -- anchoa ojitos, bright anchovy
  Anchoa lyolepis (Evermann and Marsh, 1900) -- valid -- anchoa mulata, dusky anchovy, manjúa mulata, shortfinger anchovy
  Anchoa mitchilli (Valenciennes in Cuvier and Valenciennes, 1848) -- valid -- anchoa de caleta, bay anchovy
  Anchoa mundeola (Gilbert and Pierson in Jordan and Evermann, 1898) -- valid -- anchoa panameña falsa, false Panama anchovy
  Anchoa mundeoloides (Breder, 1928) -- valid -- anchoa golfina, northern Gulf anchovy
  Anchoa nasus (Kner and Steindachner, 1867) -- valid -- anchoa trompuda, bignose anchovy, longnose anchovy
  Anchoa parva (Meek and Hildebrand, 1923) -- valid -- anchoa parva, little anchovy, manjúa parva
  Anchoa scofieldi (Jordan and Culver in Jordan, 1895) -- valid -- anchoa amarilla, Scofield's anchovy, yellow anchovy
  Anchoa walkeri Baldwin and Chang, 1970 -- valid -- anchoa persistente, persistent anchovy, Walker's anchovy
  Anchovia clupeoides (Swainson, 1839) -- valid -- anchoveta sardina, hachudo, zabaleta anchovy
  Anchovia macrolepidota (Kner, 1863) -- valid -- anchoveta escamuda, bigscale anchovy
  Anchoviella perfasciata (Poey, 1860) -- valid -- anchoa chata, flat anchovy, manjúa chata, Poey's anchovy
  Ancylopsetta dendritica Gilbert, 1890 -- valid -- lenguado tresojos, threespot sand flounder, Threespot Sand Flounder
  Ancylopsetta dilecta (Goode & Bean, 1883) -- valid -- lenguado tres manchas, Three-eye Flounder, three-eye flounder
  Ancylopsetta quadrocellata Gill, 1864 -- invalid -- lenguado cuatro manchas, Ocellated Flounder, ocellated flounder
  Anguilla rostrata (Lesueur, 1817) -- valid -- American eel, anguila, anguila americana, anguille d'Amérique
  Anguillidae -- valid -- anguilas de río, anguilles d'eau douce, freshwater eels
  Anguilliformes -- valid -- anguilles, eels
  Anisarchus medius (Reinhardt, 1837) -- valid -- stout eelblenny
  Anisotremus caesius (Jordan and Gilbert, 1882) -- valid -- burro mojarro, silvergray grunt
  Anisotremus davidsonii (Steindachner, 1876) -- valid -- sargo, sargo rayado
  Anisotremus dovii (Günther, 1864) -- valid -- blackbarred grunt, burro rompepaila
  Anisotremus interruptus (Gill, 1862) -- valid -- burrito grunt, burro bacoco
  Anisotremus pacifici (Günther, 1864) -- valid -- burro carruco, carruco grunt
  Anisotremus surinamensis (Bloch, 1791) -- valid -- black margate, burriquete, pompón
  Anisotremus taeniatus Gill, 1861 -- valid -- burro bandera, catalina, Panamic porkfish
  Anisotremus virginicus (Linnaeus, 1758) -- valid -- burro payaso, catalineta, porkfish
  Anomalopidae -- valid -- flashlight fishes, flashlightfishes, laterneye fishes, ojos de linterna, poissons-phares
  Anoplagonus inermis (Günther, 1860) -- valid -- smooth alligatorfish
  Anoplarchus insignis Gilbert and Burke, 1912 -- valid -- slender cockscomb
  Anoplarchus purpurescens Gill, 1861 -- valid -- high cockscomb
  Anoplopoma fimbria (Pallas, 1814) -- valid -- bacalao negro, sablefish
  Anoplopomatidae -- valid -- bacalaos negros, morues noires, sablefishes
  Anotopteridae -- invalid -- dagas, daggertooth, daggertooths, pharaons
  Anotopterus nikparini Kukuev, 1998 -- valid -- daga, North Pacific daggertooth
  Anotopterus pharao Zugmayer, 1911 -- valid -- daggertooth
  Antennariidae -- valid -- anglerfishes, antennaires, frogfishes, ranisapos, sea mice
  Antennarius avalonis Jordan and Starks, 1907 -- valid -- ranisapo antenado, roughjaw frogfish
  Antennarius multiocellatus (Valenciennes in Cuvier and Valenciennes, 1837) -- valid -- longlure frogfish, pescador caña larga, ranisapo ceboso
  Antennarius ocellatus (Bloch and Schneider, 1801) -- valid -- ocellated frogfish, pescador ocelado, ranisapo pescador
  Antennarius pauciradiatus Schultz, 1957 -- valid -- dwarf frogfish, dwarfed frogfish, ranisapo enano
  Antennarius radiosus Garman, 1896 -- valid -- big-eyed frogfish, ranisapo uniocelado, singlespot frogfish
  Antennarius sanguineus Gill, 1863 -- valid -- bloody frogfish, ranisapo sangrón, sanguine frogfish
  Antennarius striatus (Shaw in Shaw and Nodder, 1794) -- valid -- pescador, ranisapo estriado, striated frogfish
  Antennatus strigatus (Gill, 1863) -- valid -- bandtail frogfish, ranisapo rabo listado
  Anthias nicholsi Firth, 1933 -- valid -- mero aleta amarilla, yellowfin bass
  Anthias tenuis Nichols, 1920 -- valid -- mero naricita, threadnose bass
  Anthias woodsi Anderson and Heemstra, 1980 -- valid -- swallowtail bass
  Antigonia capros Lowe, 1843 -- valid -- deepbody boarfish, elevado, verraco alto
  Antigonia combatia Berry and Rathjen, 1959 -- valid -- pez pecarí, shortspine boarfish
  Antimora microlepis Bean, 1890 -- valid -- finescale antimora, finescale codling, mora viola, Pacific flatnose
  Apeltes quadracus (Mitchill, 1815) -- valid -- bloody stickleback, épinoche à quatre épines, fourspine stickleback
  Aphredoderidae Bonaparte, 1846 -- valid -- percas pirata, perches-pirates, pirate perches
  Aphredoderus sayanus (Gilliams, 1824) -- valid -- pirate perch
  Aplatophis chauliodus Böhlke, 1956 -- valid -- tusky eel
  Aplocheilidae Bleeker, 1860 -- valid -- almirantes, aplochéilidés, egg-laying toothcarps, rivulines
  Aplodinotus grunniens Rafinesque, 1819 -- valid -- freshwater drum, malachigan, roncador de agua dulce
  Apodichthys flavidus Girard, 1854 -- valid -- penpoint gunnel
  Apodichthys fucorum Jordan and Gilbert, 1880 -- valid -- espinoso de marea zacatero, rockweed gunnel
  Apogon affinis (Poey, 1875) -- valid -- bigtooth cardinalfish, cardenal dentudo, cardenal dientón
  Apogon atricaudus Jordan and McGregor in Jordan and Evermann, 1898 -- valid -- cardenal sencillo, plain cardinalfish
  Apogon aurolineatus (Mowbray in Breder, 1927) -- valid -- bridle cardinalfish, cardenal frenado
  Apogon binotatus (Poey, 1867) -- valid -- barred cardinalfish, cardenal barreado, cardenal rayado
  Apogon dovii Günther, 1861 -- valid -- cardenal colimanchada, tailspot cardinalfish
  Apogon evermanni Jordan and Snyder, 1904 -- valid -- cardenal coralero, oddscale cardinalfish, oddscaled cardinalfish
  Apogon gouldi Smith-Vaniz, 1977 -- valid -- cardenal de lo alto, deepwater cardinalfish
  Apogon guadalupensis (Osburn and Nichols, 1916) -- valid -- cardenal mexicano, Guadaloupe cardinalfish, Guadalupe cardinalfish
  Apogon lachneri Böhlke, 1959 -- valid -- cardenal estrella blanca, whitestar cardinalfish
  Apogon leptocaulus Gilbert, 1972 -- valid -- slendertail cardinalfish
  Apogon maculatus (Poey, 1860) -- valid -- cardenal manchado, flamefish, saddletailed cardinalfish
  Apogon pacificus (Herre, 1935) -- valid -- cardenal morro listado, pink cardinalfish
  Apogon phenax Böhlke and Randall, 1968 -- valid -- cardenal mimético, mimic cardinalfish
  Apogon pillionatus Böhlke and Randall, 1968 -- valid -- broadsaddle cardinalfish, cardenal colirrayada
  Apogon planifrons Longley and Hildebrand, 1940 -- valid -- cardenal pálido, pale cardinalfish
  Apogon pseudomaculatus Longley, 1932 -- valid -- cardenal de dos puntos, cardenal dos puntos, twospot cardinalfish
  Apogon quadrisquamatus Longley, 1934 -- valid -- cardenal espinoso, sawcheek cardinalfish
  Apogon retrosella (Gill, 1862) -- valid -- barspot cardinalfish, cardenal de Cortés, Cortez cardinalfish
  Apogon townsendi (Breder, 1927) -- valid -- belted cardinalfish, cardenal cincho, cardenal con cinto
  Apogonidae -- valid -- apogonidés, cardenales, cardinalfishes, poissons-cardinaux
  Apristurus brunneus (Gilbert, 1892) -- valid -- brown cat shark, pejegato marrón
  Aprognathodon platyventris Böhlke, 1967 -- valid -- stripe eel
  Apsilus dentatus Guichenot, 1853 -- valid -- arnillo, black snapper, pargo lamparita
  Apterichtus ansp (Böhlke, 1968) -- valid -- academy eel
  Apterichtus equatorialis (Myers and Wade, 1941) -- valid -- equatorial eel, tieso ecuatorial
  Apterichtus kendalli (Gilbert, 1891) -- valid -- finless eel
  Aptocyclus ventricosus (Pallas, 1769) -- valid -- smooth lumpsucker
  Archistes biseriatus (Gilbert and Burke, 1912) -- valid -- scaled sculpin
  Archoplites interruptus (Girard, 1854) -- valid -- Sacramento perch
  Archosargus probatocephalus (Walbaum, 1792) -- valid -- sargo chopa, sheepshead
  Archosargus rhomboidalis (Linnaeus, 1758) -- valid -- salema, sargo amarillo, sea bream
  Arcos erythrops (Jordan and Gilbert, 1882) -- valid -- chupapiedra de cantil, rockwall clingfish
  Arcos macrophthalmus (Günther, 1861) -- valid -- chupapiedra acojinada, padded clingfish
  Arctogadus borisovi Dryagin, 1932 -- valid -- east Siberian cod, toothed cod
  Arctogadus glacialis (Peters, 1872) -- valid -- Arctic cod, polar cod
  Arctoscopus japonicus (Steindachner, 1881) -- valid -- sailfin sandfish
  Arctozenus risso (Bonaparte, 1840) -- valid -- lussion blanc, white barracudina
  Argentina sialis Gilbert, 1890 -- valid -- argentina del Pacífico, Pacific argentine
  Argentina silus (Ascanius, 1775) -- valid -- Atlantic argentine, grande argentine
  Argentina striata Goode and Bean, 1896 -- valid -- argentina, argentina estriada, striated argentine
  Argentinidae -- valid -- argentinas, argentines, argentines, herring smelts
  Ariidae Bleeker, 1862 -- valid -- bagres marinos, fork-tailed catfishes, poissons-chats marins, sea catfishes
  Ariomma bondi Fowler, 1930 -- valid -- pastorcillo lucia, pastorcillo lucía, silver-rag
  Ariomma melanum (Ginsburg, 1954) -- valid -- brown driftfish, pastorcillo café
  Ariomma regulus (Poey, 1868) -- valid -- pastorcillo aquillado, spotted driftfish
  Ariommatidae -- valid -- ariommatids, pastorcillos, poissons pailletés
  Ariopsis assimilis (Günther, 1864) -- valid -- bagre maya, Maya sea catfish
  Ariopsis dasycephalus (Günther, 1864) -- invalid -- bagre barrigón, bigbelly sea catfish
  Ariopsis felis (Linnaeus, 1766) -- valid -- bagre boca chica, hardhead catfish
  Ariopsis guatemalensis (Günther, 1864) -- valid -- bagre cuatete, widehead sea catfish
  Ariopsis kessleri (Steindachner, 1877) -- invalid -- bagre esculpido, sculptured sea catfish
  Ariopsis planiceps (Steindachner, 1877) -- invalid -- bagre cabeza chata, flathead sea catfish
  Ariopsis platypogon (Günther, 1864) -- invalid -- bagre cominate, cominate sea catfish
  Ariopsis seemanni (Günther, 1864) -- valid -- bagre tete, tete sea catfish
  Ariosoma anale (Poey, 1860) -- valid -- congrio estirado, longtrunk conger
  Ariosoma balearicum (Delaroche, 1809) -- valid -- bandtooth conger, congrio algino, congrio balear
  Ariosoma gilberti (Ogilby, 1898) -- valid -- congrio narigón, sharpnose conger
  Arothron hispidus (Linnaeus, 1758) -- valid -- botete panza rayada, poison puffer, stripebelly puffer
  Arothron meleagris (Lacepède, 1798) -- valid -- 'opu hue, botete aletas punteadas, guineafowl puffer
  Artediellus atlanticus Jordan and Evermann, 1898 -- valid -- Atlantic hookear sculpin, hameçon atlantique
  Artediellus gomojunovi Taranetz, 1933 -- valid -- Gomojunov's hookear sculpin, spinyhook sculpin
  Artediellus ochotensis Gilbert and Burke, 1912 -- valid -- Okhotsk hookear sculpin
  Artediellus pacificus Gilbert, 1896 -- valid -- hookhorn sculpin, hookhorned sculpin
  Artediellus scaber Knipowitsch, 1907 -- valid -- hamecon, rough hookear sculpin
  Artediellus uncinatus (Reinhardt, 1834) -- valid -- Arctic hookear sculpin, hameçon neigeux
  Artedius corallinus (Hubbs, 1926) -- valid -- charrasco coralino, coralline sculpin
  Artedius fenestralis Jordan and Gilbert, 1883 -- valid -- padded sculpin
  Artedius harringtoni (Starks, 1896) -- valid -- scalyhead sculpin
  Artedius lateralis (Girard, 1854) -- valid -- charrasco cabeza lisa, smoothhead sculpin
  Artedius notospilotus Girard, 1856 -- valid -- bonehead sculpin, bonyhead sculpin, charrasco huesudo
  Aruma histrio (Jordan, 1884) -- valid -- gobio lento, slow goby
  Ascelichthys rhodorus Jordan and Gilbert, 1880 -- valid -- rosylip sculpin
  Asemichthys taylori Gilbert, 1912 -- valid -- spinynose sculpin
  Aseraggodes herrei Seale, 1940 -- valid -- reticulated sole, Reticulated Sole, sol reticulado
  Aspidophoroides monopterygius (Bloch, 1786) -- valid -- alligatorfish, poisson-alligator atlantique
  Aspistor kessleri (Steindachner, 1877) -- valid -- bagre esculpido, sculptured sea catfish
  Aspistor planiceps (Steindachner, 1877) -- valid -- bagre cabeza chata, flathead sea catfish
  Aspistor platypogon (Günther, 1864) -- valid -- bagre cominate, cominate sea catfish
  Assurger anzac (Alexander, 1917) -- valid -- razorback scabbardfish, sable aserrado
  Astrapogon alutus (Jordan and Gilbert, 1882) -- valid -- bronze cardinalfish, cardenal bronceado
  Astrapogon puncticulatus (Poey, 1867) -- valid -- blackfin cardinalfish, cardenal punteado
  Astrapogon stellatus (Cope, 1867) -- valid -- cardenal del cobo, conchfish
  Astronotus ocellatus (Agassiz in Spix and Agassiz, 1831) -- valid -- oscar
  Astroscopus guttatus Abbott, 1860 -- valid -- northern stargazer
  Astroscopus y-graecum (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- miracielo del sureste, southern stargazer
  Astroscopus zephyreus Gilbert and Starks in Gilbert, 1897 -- valid -- miracielo perro, Pacific stargazer
  Astyanax armandoi Lozano-Vilano and Contreras-Balderas, 1990 -- valid -- Penjamo tetra, sardinita de Pénjamo
  Astyanax mexicanus (De Filippi, 1853) -- valid -- Mexican tetra, sardinita mexicana
  Ataeniobius toweri (Meek, 1904) -- valid -- bluetail goodea, bluetail splitfin, mexcalpique cola azul, striped goodea
  Atheresthes evermanni Jordan & Starks, 1904 -- valid -- Kamchatka flounder, Kamchatka Flounder
  Atheresthes stomias (Jordan & Gilbert, 1880) -- valid -- arrowtooth flounder, Arrowtooth Flounder, plie à grande bouche
  Atherinella alvarezi (Diaz-Pardo, 1972) -- valid -- Gulf silverside, plateadito de Tacotalpa
  Atherinella ammophila Chernoff and Miller, 1984 -- valid -- La Palma silverside, plateadito de La Palma
  Atherinella balsana (Meek, 1902) -- valid -- Balsas silverside, plateadito del Balsas
  Atherinella callida Chernoff, 1986 -- valid -- cunning silverside, plateadito del Refugio
  Atherinella crystallina (Jordan and Culver in Jordan, 1895) -- valid -- blackfin silverside, plateadito del Presidio
  Atherinella elegans Chernoff, 1986 -- valid -- Fuerte silverside, plateadito del Fuerte
  Atherinella eriarcha Jordan and Gilbert, 1882 -- valid -- longfin silverside, plateadito plateado
  Atherinella guatemalensis (Günther, 1864) -- valid -- peppered silverside, plateadito de Huamuchal
  Atherinella lisa (Meek, 1904) -- valid -- naked silverside, plateadito del Hule
  Atherinella marvelae (Chernoff and Miller, 1982) -- valid -- Eyipantla silverside, plateadito de Eyipantla
  Atherinella nepenthe (Myers and Wade, 1942) -- valid -- pitcher silverside, plateadito marino
  Atherinella sallei (Regan, 1903) -- valid -- large-eye silverside, plateadito del Papaloapan
  Atherinella schultzi (Alvarez and Carranza, 1952) -- valid -- Chimalapa silverside, plateadito de Chimalapa
  Atherinidae -- valid -- athérines, Old World silversides, silversides, tinícalos
  Atherinomorus stipes (Müller and Troschel in Schomburgk, 1848) -- valid -- cabezote, hardhead silverside, tinícalo cabezón
  Atherinops affinis (Ayres, 1860) -- valid -- pejerrey pescadillo, topsmelt
  Atherinopsidae -- valid -- charales y pejerreyes, New World silversides, poissons d'argent
  Atherinopsis californiensis Girard, 1854 -- valid -- jacksmelt, pejerrey mocho
  Atractoscion nobilis (Ayres, 1860) -- valid -- corvina cabaicucho, white seabass
  Atractosteus spatula (Lacepède, 1803) -- valid -- alligator gar, catán
  Atractosteus tropicus Gill, 1863 -- valid -- pejelagarto, tropical gar
  Aulopidae -- valid -- aulópidos, flagfins, limberts
  Aulopiformes -- valid -- aulopiforms, salmons
  Aulopus bajacali Parin and Kotlyar, 1984 -- valid -- eastern Pacific flagfin, lagarto del Pacífico oriental
  Aulopus filamentosus (Bloch, 1792) -- valid -- aulopus amarillento, yellowfin aulopus
  Aulorhynchidae -- valid -- trompes, trompudos, tube-snouts, tubenoses, tubesnouts
  Aulorhynchus flavidus Gill, 1861 -- valid -- trompudo sargacero, tube-snout, tubesnout
  Aulostomidae -- valid -- cornetfishes, trompetas, trompettes, trumpetfishes
  Aulostomus chinensis (Linnaeus, 1766) -- valid -- Chinese trumpetfish, painted flute mouth, painted flute mouth, trompeta china
  Aulostomus maculatus Valenciennes, 1837 -- valid -- Atlantic trumpetfish, trompa, trompeta del Atlántico, trumpetfish
  Auxis rochei (Risso, 1810) -- valid -- bonitou, bullet mackerel, bullet tuna, long corseletted frigate mackerel, melvera
  Auxis thazard (Lacepède, 1800) -- valid -- auxide, frigate mackerel, frigate tuna, melva
  Awaous banana (Valenciennes in Cuvier and Valenciennes, 1837) -- valid -- gobio de río, river goby, yellow river goby
  Axoclinus lucillae Fowler, 1944 -- valid -- Panamic triplefin, tres aletas bigote
  Axoclinus multicinctus Allen and Robertson, 1992 -- valid -- multibarred triplefin, tres aletas listado
  Axoclinus nigricaudus Allen and Robertson, 1991 -- valid -- Cortez triplefin, tres aletas colinegra
  Aztecula sallaei (Günther, 1868) -- valid -- Aztec chub, carpita azteca
  Azurina hirundo Jordan and McGregor in Jordan and Evermann, 1898 -- valid -- castañuela golondrina, swallow damselfish
  Bagre marinus (Mitchill, 1815) -- valid -- bagre, bagre bandera, gafftopsail catfish
  Bagre panamensis (Gill, 1863) -- valid -- bagre chihuil, chihuil
  Bagre pinnimaculatus (Steindachner, 1877) -- valid -- bagre barbón, long-barbeled sea catfish
  Bairdiella armata Gill, 1863 -- valid -- armed croaker, ronco armado
  Bairdiella batabana (Poey, 1860) -- invalid -- blue croaker, ronco azul
  Bairdiella chrysoura (Lacepède, 1802) -- valid -- ronco amarillo, silver perch
  Bairdiella ensifera (Jordan and Gilbert, 1882) -- valid -- ronco barbirrubia, swordspine croaker
  Bairdiella icistia (Jordan and Gilbert, 1882) -- valid -- bairdiella, corbineta, ronco roncacho
  Bairdiella ronchus (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- corvina espinosa, ground croaker, ground drummer, peacock bass, ronco, ronco rayado
  Bairdiella sanctaeluciae (Jordan, 1890) -- invalid -- corvina Santa Lucía, ronco caribeño, striped croaker
  Balistes capriscus Gmelin, 1789 -- valid -- cochino gris, gray triggerfish, pejepuerco blanco
  Balistes polylepis Steindachner, 1876 -- valid -- cochi, finescale triggerfish
  Balistes vetula Linnaeus, 1758 -- valid -- cochino, queen triggerfish
  Balistidae -- valid -- balistes, cochitos, filefishes, triggerfishes
  Barbulifer antennatus Böhlke and Robins, 1968 -- valid -- barbulifer, barbulifer, gobio antenado, whiskered goby
  Barbulifer ceuthoecus (Jordan and Gilbert, 1884) -- valid -- bearded goby
  Barbulifer mexicanus Hoese and Larson, 1985 -- valid -- gobio alambrón, saddlebanded goby
  Barbulifer pantherinus (Pellegrin, 1901) -- valid -- gobio pantera, panther goby
  Bascanichthys bascanium (Jordan, 1884) -- valid -- sooty eel, tieso tiznado
  Bascanichthys bascanoides Osburn and Nichols, 1916 -- valid -- sooty sand eel, tieso manchitas
  Bascanichthys panamensis Meek and Hildebrand, 1923 -- valid -- Panamic sand eel, tieso panámico
  Bascanichthys scuticaris (Goode and Bean, 1880) -- valid -- safío pardo, whip eel
  Bathyagonus alascanus (Gilbert, 1896) -- valid -- gray starsnout
  Bathyagonus infraspinatus (Gilbert, 1904) -- valid -- spinycheek starsnout
  Bathyagonus nigripinnis Gilbert, 1890 -- valid -- blackfin poacher
  Bathyagonus pentacanthus (Gilbert, 1890) -- valid -- bigeye poacher
  Bathyanthias mexicanus (Schultz, 1958) -- valid -- mero cola amarilla, yellowtail bass
  Bathycongrus bullisi (Smith and Kanazawa, 1977) -- valid -- bullish conger, congrio disparatado
  Bathycongrus dubius (Breder, 1927) -- valid -- dubious conger
  Bathycongrus macrurus (Gilbert, 1891) -- valid -- congrio cabeza corta, shorthead conger
  Bathycongrus varidens (Garman, 1899) -- valid -- congrio cabezón, largehead conger
  Bathycongrus vicinalis (Garman, 1899) -- valid -- congrio vecino, neighbor conger
  Bathygobius curacao (Metzelaar, 1919) -- valid -- gobio jaspeado, notchtongue goby
  Bathygobius mystacium Ginsburg, 1947 -- valid -- gobio bandeado, island frillfin
  Bathygobius ramosus Ginsburg, 1947 -- valid -- mapo panámico, Panamic frillfin
  Bathygobius soporator (Valenciennes in Cuvier and Valenciennes, 1837) -- valid -- frillfin goby, gobio mapo, mapo aguado
  Bathylagidae -- valid -- capellanes mesopelágicos, deep-sea smelts, deepsea smelts, garcettes
  Bathymaster caeruleofasciatus Gilbert and Burke, 1912 -- valid -- Alaskan ronquil
  Bathymaster leurolepis McPhail, 1965 -- valid -- smallmouth ronquil
  Bathymaster signatus Cope, 1873 -- valid -- searcher
  Bathymasteridae Jordan and Gilbert, 1883 -- valid -- roncos pelones, ronquilles, ronquils
  Bathyraja aleutica (Gilbert, 1896) -- valid -- Aleutian skate
  Bathyraja interrupta (Gill and Townsend, 1897) -- valid -- Bering skate, sandpaper skate
  Bathyraja lindbergi Ishiyama and Ishihara, 1977 -- valid -- Commander skate
  Bathyraja maculata Ishiyama and Ishihara, 1977 -- valid -- whiteblotched skate
  Bathyraja parmifera (Bean, 1881) -- valid -- Alaska skate
  Bathyraja spinicauda (Jensen, 1914) -- valid -- spinytail skate
  Bathyraja taranetzi (Dolganov, 1985) -- invalid -- mud skate
  Bathyraja violacea (Suvorov, 1935) -- valid -- Okhotsk skate
  Batrachoides gilberti Meek and Hildebrand, 1928 -- valid -- large-eye toadfish, sapo ojón
  Batrachoides goldmani Evermann and Goldsborough, 1902 -- valid -- Mexican freshwater toadfish, sapo mexicano
  Batrachoides waltersi Collette and Russo, 1981 -- valid -- multipored toadfish, sapo peludo
  Batrachoididae -- valid -- peces sapo, poissons-crapauds, toadfishes
  Batrachoidiformes -- valid -- batrachoidiforms
  Bellator brachychir (Regan, 1914) -- valid -- rubio aleticorta, shortfin searobin
  Bellator egretta (Goode and Bean, 1896) -- valid -- espátula bandera, rubio gallardete, streamer searobin
  Bellator gymnostethus (Gilbert, 1892) -- valid -- nakedbelly searobin, vaca enana
  Bellator loxias (Jordan in Gilbert, 1897) -- valid -- chevron searobin, vaca angelita
  Bellator militaris (Goode and Bean, 1896) -- valid -- horned searobin, rubio soldadito
  Bellator xenisma (Jordan and Bollman, 1890) -- valid -- splitnose searobin, vaca doble hocico
  Belonesox belizanus Kner, 1860 -- valid -- picudito, pike killifish, piketop minnow
  Belonidae -- valid -- agujones, aiguillettes, needlefishes
  Belontiidae Liem, 1963 -- invalid -- gouramies, gouramies, guramis, labyrinthfishes
  Bembrops anatirostris Ginsburg, 1955 -- valid -- duckbill flathead, longnose duckbill, pico de pato
  Bembrops gobioides (Goode, 1880) -- valid -- goby duckbill, goby flathead, pico de pala
  Benthalbella dentata (Chapman, 1939) -- valid -- northern pearleye, perlado norteño
  Benthodesmus pacificus Parin and Becker, 1970 -- valid -- cintilla del Pacífico, North Pacific frostfish
  Benthodesmus simonyi (Steindachner, 1891) -- valid -- cintilla del Atlántico, cutlassfish, frostfish, North Atlantic frostfish, Simony's frostfish
  Benthosema glaciale (Reinhardt, 1837) -- valid -- glacier lanterfish, glacier lanternfish, lanterne glaciaire
  Berycidae -- valid -- alfonsinos, alfonsinos, berycids, béryx
  Beryx decadactylus Cuvier in Cuvier and Valenciennes, 1829 -- valid -- alfonsino, broad alfonsino, red bream
  Blenniidae -- valid -- blennidés, blennies, blennies, blennies à dents de peigne, borrachos, combtooth blennies, gonelles, papillons de mer, scaleless blennies
  Blepsias bilobus Cuvier in Cuvier and Valenciennes, 1829 -- valid -- crested sculpin
  Blepsias cirrhosus (Pallas, 1814) -- valid -- silverspotted sculpin
  Bodianus diplotaenia (Gill, 1862) -- valid -- Mexican hogfish, Pacific hogfish, vieja mexicana
  Bodianus pulchellus (Poey, 1860) -- valid -- pez perro de cola amarilla, spotfin hogfish, vieja lomo negro
  Bodianus rufus (Linnaeus, 1758) -- valid -- pez perro español, Spanish hogfish, vieja española
  Bollmannia boqueronensis Evermann and Marsh, 1899 -- valid -- white-eye goby
  Bollmannia communis Ginsburg, 1942 -- valid -- gobio andrajoso, ragged goby
  Bollmannia eigenmanni (Garman, 1896) -- valid -- shelf goby
  Bollmannia macropoma Gilbert, 1892 -- valid -- frailscale goby, gobio pedernal
  Bollmannia marginalis Ginsburg, 1939 -- valid -- apostrophe goby, gobio sellado
  Bollmannia ocellata Gilbert, 1892 -- valid -- gobio penacho, pennant goby
  Bollmannia stigmatura Gilbert, 1892 -- valid -- gobio colimanchado, tailspot goby
  Bollmannia umbrosa Ginsburg, 1939 -- valid -- dusky goby, gobio prieto
  Boreogadus saida (Lepechin, 1774) -- valid -- Arctic cod, polar cod, saida franc, saïda franc
  Bothidae -- valid -- lefteye flounders, lefteyed flounders, lenguados chuecos, turbots
  Bothragonus swanii (Steindachner, 1876) -- valid -- rockhead
  Bothrocara brunneum (Bean, 1890) -- valid -- twoline eelpout, viruela dos rayas
  Bothrocara pusillum (Bean, 1890) -- valid -- Alaska eelpout
  Bothus constellatus (Jordan in Jordan & Goss, 1889) -- valid -- lenguado hoja, Pacific eyed flounder, Pacific Eyed Flounder
  Bothus leopardinus (Günther, 1862) -- valid -- lenguado leopardo del Pacífico, Pacific leopard flounder, Pacific Leopard Flounder
  Bothus lunatus (Linnaeus, 1758) -- valid -- lenguado lunado, Peacock Flounder, peacock flounder
  Bothus mancus (Broussonet, 1782) -- valid -- lenguado tropical, Tropical Flounder, tropical flounder
  Bothus ocellatus (Agassiz in Spix & Agassiz, 1831) -- valid -- chueco playón, Eyed Flounder, eyed flounder, lenguado ocelado, plie oculée
  Bothus robinsi Topp & Hoff, 1972 -- valid -- chueco dos manchas, Twospot Flounder, twospot flounder
  Brachyistius frenatus Gill, 1862 -- valid -- kelp perch, mojarra sargacera
  Brachyrhaphis hartwegi Rosen and Bailey, 1963 -- valid -- guayacón de Soconusco, Soconusco gambusia
  Brama brama (Bonnaterre, 1788) -- valid -- Atlantic pomfret, brama
  Brama caribbea Mead, 1972 -- valid -- Caribbean pomfret, tristón del Caribe
  Brama dussumieri Cuvier in Cuvier and Valenciennes, 1831 -- valid -- lowfin pomfret
  Brama japonica Hilgendorf, 1878 -- valid -- Pacific pomfret, tristón del Pacífico
  Brama orcini Cuvier in Cuvier and Valenciennes, 1831 -- valid -- bigtooth pomfret, tropical pomfret
  Bramidae -- valid -- castagnoles, pomfrets, tristones
  Bramocharax caballeroi Contreras-Balderas and Rivera-Teillery, 1985 -- valid -- Catemaco characin, pepesca de Catemaco
  Bregmaceros atlanticus Goode and Bean, 1886 -- valid -- antenna codlet, bacalete antena, ciliado
  Bregmaceros bathymaster Jordan and Bollman, 1890 -- valid -- bacalete del Pacífico oriental, East Pacific codlet
  Bregmaceros cantori Milliken and Houde, 1984 -- valid -- bacalete rayado, striped codlet
  Bregmaceros houdei Saksena and Richards, 1986 -- valid -- stellate codlet
  Bregmacerotidae Gill, 1872 -- valid -- bacaletes, bregmacerotid codfishes, codlets, varlets
  Brevoortia gunteri Hildebrand, 1948 -- valid -- finescale menhaden, sardina escamitas
  Brevoortia patronus Goode, 1878 -- valid -- Gulf menhaden, largescale menhaden, sardina lacha
  Brevoortia smithi Hildebrand, 1941 -- valid -- yellowfin menhaden
  Brevoortia tyrannus (Latrobe, 1802) -- valid -- alose tyran, Atlantic menhaden, bugfish, bunker, fatback, menhaden, mossbunker
  Brosme brosme (Ascanius, 1772) -- valid -- brosme, cusk, torsk, tusk
  Brosmophycis marginata (Ayres, 1854) -- valid -- brótula roja, red brotula
  Brotula barbata (Bloch and Schneider, 1801) -- valid -- Atlantic bearded brotula, bearded brotula, brótula, brótula barbona
  Brotula clarkae Hubbs, 1944 -- valid -- lengua rosada, Pacific bearded brotula
  Brotula ordwayi Hildebrand and Barton, 1949 -- valid -- fore-spotted brotula, lengua pintada
  Brycon guatemalensis Regan, 1908 -- valid -- macabi tetra, sardinita macabí
  Bryozoichthys lysimus (Jordan and Snyder, 1902) -- valid -- nutcracker prickleback
  Bryozoichthys marjorius McPhail, 1970 -- valid -- pearly prickleback
  Bryx dunckeri (Metzelaar, 1919) -- valid -- pez pipa ñato, pugnose pipefish, trompetero nariz-corto
  Bryx veleronis Herald, 1940 -- valid -- offshore pipefish, pez pipa velero
  Bythitidae -- valid -- brotulas, brótulas vivíparas, donzelles vivipares, viviparous brotulas
  Caelorinchus caelorhincus (Risso, 1810) -- valid -- granadero tristón, grenadier acorazado, grenadier raton, hollowsnout grenadier, saddled grenadier
  Caelorinchus caribbaeus (Goode and Bean, 1885) -- valid -- blackfin grenadier, granadero alinegro, granadero caribeño
  Caelorinchus scaphopsis (Gilbert, 1890) -- valid -- granadero carepala, shoulderspot grenadier
  Calamopteryx goslinei Böhlke and Cohen, 1966 -- valid -- brótula aletona, longarm brotula
  Calamopteryx robinsorum Cohen, 1973 -- valid -- brótula del profesor, teacher brotula
  Calamus arctifrons Goode and Bean, 1882 -- valid -- grass porgy
  Calamus bajonado (Bloch and Schneider, 1801) -- valid -- bajonao violáceo, jolthead porgy, pluma
  Calamus brachysomus (Lockington, 1880) -- valid -- Pacific porgy, pluma marotilla
  Calamus calamus (Valenciennes in Cuvier and Valenciennes, 1830) -- valid -- pez de pluma, saucereye porgy
  Calamus campechanus Randall and Caldwell, 1966 -- valid -- Campeche porgy, pluma campechana
  Calamus leucosteus Jordan and Gilbert in Jordan, 1885 -- valid -- pluma golfina, whitebone porgy
  Calamus nodosus Randall and Caldwell, 1966 -- valid -- knobbed porgy, mojarrón pecoso
  Calamus penna (Valenciennes in Cuvier and Valenciennes, 1830) -- valid -- pez de pluma manchado, pluma manchada, sheepshead porgy
  Calamus pennatula Guichenot, 1868 -- valid -- bajonao plateado, pluma, pluma del Caribe, pluma porgy
  Calamus proridens Jordan and Gilbert, 1884 -- valid -- littlehead porgy, pez de pluma rayado, pluma jorobada
  Callechelys bilinearis Kanazawa, 1952 -- valid -- tieso dos rayas, twostripe snake eel
  Callechelys cliffi Böhlke and Briggs, 1954 -- valid -- sandy ridgefin eel, tieso aquillado arenero
  Callechelys eristigma McCosker and Rosenblatt, 1972 -- valid -- spotted ridgefin eel, tieso aquillado manchado
  Callechelys guineensis (Osório, 1893) -- valid -- shorttail snake eel, tieso colicorta
  Callechelys muraena Jordan and Evermann, 1887 -- valid -- blotched snake eel, tieso moteado
  Callechelys springeri (Ginsburg, 1951) -- valid -- ridgefin eel
  Callichthyidae Bonaparte, 1838 -- valid -- armored catfishes, callichthyid armored catfishes, coridoras, mailed catfishes, plated catfishes, poissons-chats cuirassés
  Callionymidae -- valid -- dragoncillos, dragonets, dragonnets, scotter blennies
  Calotomus carolinus (Valenciennes in Cuvier and Valenciennes, 1840) -- valid -- pococho perico, stareye parrotfish, stareyed parrotfish
  Campostoma anomalum (Rafinesque, 1820) -- valid -- central stoneroller, rodapiedras del centro
  Campostoma anomalum pullum (Agassiz, 1854) -- valid
  Campostoma oligolepis Hubbs and Greene, 1935 -- valid -- largescale stoneroller
  Campostoma ornatum Girard, 1856 -- valid -- Mexican stoneroller, rodapiedras mexicano
  Campostoma pauciradii Burr and Cashner, 1983 -- valid -- bluefin stoneroller
  Cantherhines dumerilii (Hollard, 1854) -- valid -- barred filefish, lija vagabunda
  Cantherhines macrocerus (Hollard in Guichenot, 1853) -- valid -- lija de lunares blancos, whitespotted filefish
  Cantherhines pullus (Ranzani, 1842) -- valid -- lija colorada, orangespotted filefish
  Canthidermis maculata (Bloch, 1786) -- valid -- cochito manchado, rough triggerfish, sobaco manchado
  Canthidermis sufflamen (Mitchill, 1815) -- valid -- lija, ocean triggerfish, sobaco lija
  Canthigaster jamestyleri Moura and Castro, 2002 -- valid -- goldface toby
  Canthigaster punctatissima (Günther, 1870) -- valid -- botete bonito, spotted sharpnose puffer
  Canthigaster rostrata (Bloch, 1786) -- valid -- sharpnose puffer, tamboril narizón, tamborín narizón
  Caproidae -- valid -- boarfishes, cuckoos, sangliers, verracos
  Caralophia loxochila Böhlke, 1955 -- valid -- slantlip eel
  Carangidae -- valid -- carangues, jacks, jureles y pámpanos, pampanos, pompanos, saurels
  Caranx bartholomaei Cuvier in Cuvier and Valenciennes, 1833 -- invalid -- cojinuda amarilla, yellow jack
  Caranx caballus Günther, 1868 -- valid -- green jack, jurel bonito
  Caranx caninus Günther, 1867 -- valid -- jurel toro, Pacific crevalle jack
  Caranx crysos (Mitchill, 1815) -- valid -- blue runner, cojinúa, cojinuda negra
  Caranx dentex (Bloch and Schneider, 1801) -- invalid -- underjaw kingfish, white trevally
  Caranx hippos (Linnaeus, 1766) -- valid -- crevalle jack, jiguagua, jurel común
  Caranx latus Agassiz in Spix and Agassiz, 1831 -- valid -- gallego, horse-eye jack, jurel blanco
  Caranx lugubris Poey, 1860 -- valid -- black jack, jurel negro, tiñosa
  Caranx melampygus Cuvier in Cuvier and Valenciennes, 1833 -- valid -- black ulua, bluefin trevally, jurel aleta azul
  Caranx otrynter Jordan and Gilbert, 1883 -- invalid -- jurel chicuaca, threadfin jack
  Caranx ruber (Bloch, 1793) -- invalid -- bar jack, cibí carbonero, cojinuda carbonera
  Caranx sexfasciatus Quoy and Gaimard, 1825 -- valid -- bigeye trevally, great trevally, jurel voraz
  Caranx vinctus Jordan and Gilbert, 1882 -- valid -- cocinera, cocinera, cocinero, cocinero
  Carapidae -- valid -- aurins, pearlfishes, perleros
  Carapus bermudensis (Jones, 1874) -- valid -- Atlantic pearlfish, fierásfer, pearlfish, perlero del Atlántico
  Carapus dubius (Putnam, 1874) -- valid -- Pacific pearlfish, perlero del Pacífico
  Carassius auratus (Linnaeus, 1758) -- valid -- carassin, carpa dorada, goldfish
  Carcharhinidae Jordan and Evermann, 1896 -- valid -- mangeurs d'hommes, requiem sharks, tiburones gambuso
  Carcharhinus acronotus (Poey, 1860) -- valid -- blacknose shark, tiburón cangüay, tiburón limón
  Carcharhinus albimarginatus (Rüppell, 1837) -- valid -- silvertip shark, tiburón puntas blancas
  Carcharhinus altimus (Springer, 1950) -- valid -- baboso, bignose shark, tiburón narizón
  Carcharhinus brachyurus (Günther, 1870) -- valid -- bronze whaler, copper shark, narrowtooth shark, tiburón cobrizo
  Carcharhinus brevipinna (Müller and Henle, 1839) -- valid -- spinner shark, tiburón curro, tiburón de arrecife
  Carcharhinus falciformis (Müller and Henle, 1839) -- valid -- jaquetón, silky shark, tiburón piloto
  Carcharhinus galapagensis (Snodgrass and Heller, 1905) -- valid -- Galapagos shark, tiburón de Galápagos
  Carcharhinus isodon (Müller and Henle, 1839) -- valid -- finetooth shark, galano dientefino, tiburón dentiliso
  Carcharhinus leucas (Müller and Henle, 1839) -- valid -- bull shark, cabeza de batea, tiburón toro
  Carcharhinus limbatus (Müller and Henle, 1839) -- valid -- balicero, blacktip shark, tiburón volador
  Carcharhinus longimanus (Poey, 1861) -- valid -- galano, oceanic whitetip shark, tiburón oceánico
  Carcharhinus obscurus (Lesueur, 1818) -- valid -- dusky shark, tiburón amarillo, tiburón gambuso
  Carcharhinus perezii (Poey, 1876) -- valid -- cabeza dura, Caribbean reef shark, reef shark, tiburón coralino
  Carcharhinus plumbeus (Nardo, 1827) -- valid -- arenero, sandbar shark, tiburón aleta de cartón
  Carcharhinus porosus (Ranzani, 1839) -- valid -- smalltail shark, tiburón poroso
  Carcharhinus signatus (Poey, 1868) -- valid -- night shark, tiburón de noche, tiburón nocturno
  Carcharias taurus Rafinesque, 1810 -- valid -- sand tiger, sand tiger shark, tiburón arenero tigre, tigre arenero
  Carcharodon carcharias (Linnaeus, 1758) -- valid -- great white shark, jaquetón de ley, requin blanc, tiburón blanco, white shark
  Careproctus candidus Gilbert and Burke, 1912 -- valid -- bigeye snailfish
  Careproctus furcellus Gilbert and Burke, 1912 -- valid -- emarginate snailfish
  Careproctus gilberti Burke, 1912 -- valid -- smalldisk snailfish
  Careproctus longipinnis Burke, 1912 -- valid -- limace à longues nageoires, longfin snailfish
  Careproctus melanurus Gilbert, 1892 -- valid -- baboso colinegra, blacktail snailfish
  Careproctus ostentum Gilbert, 1896 -- valid -- microdisk snailfish
  Careproctus phasma Gilbert, 1896 -- valid -- spectral snailfish
  Careproctus rastrinus Gilbert and Burke, 1912 -- valid -- salmon snailfish
  Careproctus reinhardti (Krøyer, 1862) -- valid -- petite limace de mer, sea tadpole
  Careproctus scottae Chapman and DeLacy, 1934 -- valid -- peachskin snailfish
  Careproctus spectrum Bean, 1890 -- valid -- stippled snailfish
  Carlhubbsia kidderi (Hubbs, 1936) -- valid -- Champoton gambusia, guayacón de Champotón
  Carpiodes carpio (Rafinesque, 1820) -- valid -- matalote chato, river carpsucker
  Carpiodes cyprinus (Lesueur, 1817) -- valid -- couette, quillback, quillback carpsucker
  Carpiodes velifer (Rafinesque, 1820) -- valid -- highfin carpsucker
  Cathorops aguadulce (Meek, 1904) -- valid -- bagre aguadulce, estuarine sea catfish
  Cathorops dasycephalus (Günther, 1864) -- valid -- bagre barrigón, bigbelly sea catfish
  Cathorops fuerthii (Steindachner, 1877) -- valid -- bagre congo, congo sea catfish
  Cathorops melanopus (Günther, 1864) -- valid -- bagre prieto, dark sea catfish
  Cathorops spixii (Agassiz in Spix and Agassiz, 1829) -- valid -- bagre cuinchi, raspfin sea catfish
  Catostomidae -- valid -- catostomes, matalotes, suckers
  Catostomus ardens Jordan and Gilbert, 1881 -- valid -- Utah sucker
  Catostomus bernardini Girard, 1856 -- valid -- matalote yaqui, Yaqui sucker
  Catostomus cahita Siebert and Minckley, 1986 -- valid -- Cahita sucker, matalote cahita
  Catostomus catostomus (Forster, 1773) -- valid -- longnose sucker, meunier rouge
  Catostomus clarkii Baird and Girard, 1854 -- valid -- desert sucker, matalote del desierto
  Catostomus columbianus (Eigenmann and Eigenmann, 1893) -- valid -- bridgelip sucker
  Catostomus commersonii (Lacepède, 1803) -- valid -- meunier noir, white sucker
  Catostomus commersonnii (Lacepède, 1803) -- invalid -- meunier noir, white sucker
  Catostomus discobolus Cope, 1871 -- valid -- bluehead sucker
  Catostomus fumeiventris Miller, 1973 -- valid -- Owens sucker
  Catostomus insignis Baird and Girard, 1854 -- valid -- matalote de Sonora, Sonora sucker
  Catostomus latipinnis Baird and Girard, 1853 -- valid -- flannelmouth sucker
  Catostomus leopoldi Siebert and Minckley, 1986 -- valid -- Bavispe sucker, fleshylip sucker, matalote del Bavispe
  Catostomus macrocheilus Girard, 1856 -- valid -- largescale sucker
  Catostomus microps Rutter, 1908 -- valid -- Modoc sucker
  Catostomus nebuliferus Garman, 1881 -- valid -- matalote del Nazas, Nazas sucker
  Catostomus occidentalis Ayres, 1854 -- valid -- Sacramento sucker
  Catostomus platyrhynchus (Cope, 1874) -- valid -- mountain sucker
  Catostomus plebeius Baird and Girard, 1854 -- valid -- matalote del Bravo, Rio Grande sucker
  Catostomus rimiculus Gilbert and Snyder in Gilbert, 1898 -- valid -- Klamath smallscale sucker
  Catostomus santaanae (Snyder, 1908) -- valid -- Santa Ana sucker
  Catostomus snyderi Gilbert, 1898 -- valid -- Klamath largescale sucker
  Catostomus tahoensis Gill and Jordan in Jordan, 1878 -- valid -- Tahoe sucker
  Catostomus warnerensis Snyder, 1908 -- valid -- Warner sucker
  Catostomus wigginsi Herre and Brock in Herre, 1936 -- valid -- matalote opata, Opata sucker, Sonoran sucker
  Caulolatilus affinis Gill, 1865 -- valid -- conejo, Pacific golden-eyed tilefish
  Caulolatilus chrysops (Valenciennes in Cuvier and Valenciennes, 1833) -- valid -- blanquillo ojo amarillo, goldface tilefish, tumba dorada
  Caulolatilus cyanops Poey, 1866 -- valid -- blackline tilefish, domingo, tumba
  Caulolatilus hubbsi Dooley, 1978 -- valid -- blanquillo enigmático, enigmatic tilefish
  Caulolatilus intermedius Howell Rivero, 1936 -- valid -- anchor tilefish, blanquillo payaso, tumba parda
  Caulolatilus microps Goode and Bean, 1878 -- valid -- blanquillo lucio, blueline tilefish
  Caulolatilus princeps (Jenyns, 1840) -- valid -- ocean whitefish, pierna
  Cebidichthys violaceus (Girard, 1854) -- valid -- abrojo cara de mono, monkeyface prickleback
  Centrarchidae -- valid -- achigans et crapets, lobinas, sunfishes
  Centrarchus macropterus (Lacepède, 1801) -- valid -- flier, peacock sunfish, round sunfish
  Centrolophidae -- valid -- cojinobas, medusafishes, pompiles, rudderfishes
  Centrolophus medusophagus Cocco, 1839 -- invalid -- brown ruff
  Centrolophus niger (Gmelin, 1789) -- valid -- black ruff
  Centropomidae -- valid -- centropomes, robalos, snooks
  Centropomus armatus Gill, 1863 -- valid -- longspine snook, robalo espina larga
  Centropomus ensiferus Poey, 1860 -- valid -- robalo de espolón, róbalo espinoso, swordspine snook
  Centropomus medius Günther, 1864 -- valid -- blackfin snook, robalo aleta prieta
  Centropomus mexicanus Bocourt, 1868 -- valid -- Contantino snook, largescale fat snook, robalo gordo
  Centropomus nigrescens Günther, 1864 -- valid -- black snook, robalo negro, robalo prieto, robalo prieto
  Centropomus parallelus Poey, 1860 -- valid -- chucumite, fat snook, robalito, smallscale fat snook
  Centropomus pectinatus Poey, 1860 -- valid -- constantino, róbalo prieto, tarpon snook
  Centropomus poeyi Chávez, 1961 -- valid -- Mexican snook, robalo prieto
  Centropomus robalito Jordan and Gilbert, 1882 -- valid -- constantino, constantino, robalo aleta amarilla, yellowfin snook
  Centropomus undecimalis (Bloch, 1792) -- valid -- common snook, robalo blanco, róbalo común, snook
  Centropomus unionensis Bocourt, 1868 -- valid -- humpback snook, robalo serrano
  Centropomus viridis Lockington, 1877 -- valid -- robalo plateado, white snook
  Centropristis fuscula (Poey, 1861) -- valid -- serrano oliváceo, twospot sea bass
  Centropristis ocyurus (Jordan and Evermann, 1887) -- valid -- bank sea bass, cabrilla de banco
  Centropristis philadelphica (Linnaeus, 1758) -- valid -- cabrilla serrana, rock sea bass
  Centropristis striata (Linnaeus, 1758) -- valid -- black sea bass
  Centropyge argi Woods and Kanazawa, 1951 -- valid -- angelote pigmeo, cherubfish
  Centroscyllium fabricii (Reinhardt, 1825) -- valid -- aiguillat noir, black dogfish
  Centroscymnus coelolepis Barbosa du Bocage and Brito Capello, 1864 -- valid -- Portuguese dogfish, Portuguese shark, tiburón portugués
  Cephalaspidomorphi -- valid -- lampreys
  Cephalopholis cruentata (Lacepède, 1802) -- valid -- cherna enjambre, enjambre, graysby
  Cephalopholis fulva (Linnaeus, 1758) -- valid -- cabrilla roja, coney, guatívere
  Cephalopholis panamensis (Steindachner, 1877) -- valid -- cabrilla enjambre, Pacific graysby, Panama graysby
  Cephaloscyllium ventriosum (Garman, 1880) -- valid -- pejegato globo, swell shark
  Cephalurus cephalus (Gilbert, 1892) -- valid -- lollipop cat shark, lollipop catshark, pejegato renacuajo
  Ceratiidae -- valid -- deepsea anglerfishes, peces anzuelo, poissons-pêcheurs, seadevils
  Ceratoscopelus townsendi (Eigenmann and Eigenmann, 1889) -- valid -- diente de perro, dogtooth lampfish
  Cerdale floridana Longley, 1934 -- valid -- pugjaw wormfish
  Cetengraulis edentulus (Cuvier, 1829) -- valid -- anchoveta rabo amarillo, Atlantic anchoveta, bocon, bocón
  Cetengraulis mysticetus (Günther, 1867) -- valid -- anchoveta, anchoveta bocona, Pacific anchoveta
  Cetorhinidae Gill, 1862 -- valid -- basking shark, basking sharks, pèlerins, tiburones peregrino
  Cetorhinus maximus (Gunnerus, 1765) -- valid -- basking shark, pèlerin, pez elefante, tiburón peregrino
  Chaenomugil proboscideus (Günther, 1861) -- valid -- lisa hocicona, snouted mullet
  Chaenopsidae -- valid -- chaenopsidés, flag blennies, trambollos tubícolas, tube blennies
  Chaenopsis alepidota (Gilbert, 1890) -- valid -- orangethroat pikeblenny, tubícola lucio
  Chaenopsis coheni Böhlke, 1957 -- valid -- Cortez pikeblenny, tubícola picudo
  Chaenopsis limbaughi Robins and Randall, 1965 -- valid -- yellowface pikeblenny
  Chaenopsis ocellata Poey in Gill, 1865 -- valid -- bluethroat pikeblenny, sapito afilado, tubícola afilado
  Chaenopsis roseola Hastings and Shipp, 1981 -- valid -- freckled pikeblenny
  Chaetodipterus faber (Broussonet, 1782) -- valid -- Atlantic spadefish, chabela, paguala
  Chaetodipterus zonatus (Girard, 1858) -- valid -- chambo, Pacific spadefish
  Chaetodon capistratus Linnaeus, 1758 -- valid -- foureye butterflyfish, mariposa ocelada, parche ocelado
  Chaetodon humeralis Günther, 1860 -- valid -- mariposa muñeca, muneca, threeband butterflyfish, threebanded butterflyfish
  Chaetodon ocellatus Bloch, 1787 -- valid -- mariposa perla amarilla, parche ocelado amarillo, spotfin butterflyfish
  Chaetodon sedentarius Poey, 1860 -- valid -- mariposa parche, parche mariposa, reef butterflyfish
  Chaetodon striatus Linnaeus, 1758 -- valid -- banded butterflyfish, mariposa rayada, parche rayado
  Chaetodontidae -- valid -- butterflyfishes, peces mariposa, poissons-papillons
  Chanidae -- valid -- chanos, milkfishes, sabalotes
  Channa marulius (Hamilton, 1822) -- valid -- bullseye snakehead
  Channidae -- valid -- cabezas de serpiente, snakeheads, têtes-de-serpent
  Channomuraena vittata (Richardson, 1845) -- valid -- broadbanded moray, morena cinturones, morena rara
  Chanos chanos (Forsskål, 1775) -- valid -- milkfish, sabalote
  Chapalichthys encaustus (Jordan and Snyder, 1899) -- valid -- barred splitfin, pintito de Ocotlán
  Chapalichthys pardalis Alvarez, 1963 -- valid -- pintito de Tocumbo, polka-dot splitfin
  Chapalichthys peraticus Alvarez, 1963 -- valid -- alien splitfin, pintito de San Juanico
  Characidae -- valid -- American characins, carácidos, characins, characins, charicidés, tetras, tétras
  Characodon audax Smith and Miller, 1986 -- valid -- bold characodon, mexcalpique del Toboso
  Characodon garmani Jordan and Evermann, 1898 -- valid -- mexcalpique de Parras, Parras characodon
  Characodon lateralis Günther, 1866 -- valid -- mexcalpique arcoiris, rainbow characodon
  Chasmistes brevirostris Cope, 1879 -- valid -- short-nose sucker, shortnose sucker
  Chasmistes cujus Cope, 1883 -- valid -- cui-ui
  Chasmistes liorus Jordan, 1878 -- valid -- June sucker
  Chasmistes muriei Miller and Smith, 1981 -- valid -- Snake River sucker
  Chasmodes bosquianus (Lacepède, 1800) -- valid -- striped blenny
  Chasmodes longimaxilla Williams, 1983 -- valid -- borracho bocón, stretchjaw blenny
  Chasmodes saburrae Jordan and Gilbert, 1882 -- valid -- Florida blenny
  Chauliodus macouni Bean, 1890 -- valid -- Pacific viperfish, víbora del Pacífico
  Chaunacidae -- valid -- coffinfishes, crapauds de mer, gapers, gómitas, sea toads
  Chaunax stigmaeus Fowler, 1946 -- valid -- redeye gaper
  Cheilopogon atrisignis (Jenkins, 1903) -- valid -- glider flyingfish, volador planeador
  Cheilopogon cyanopterus (Valenciennes in Cuvier and Valenciennes, 1847) -- valid -- margined flyingfish, volador azul, volador de borde oscuro
  Cheilopogon dorsomacula (Fowler, 1944) -- valid -- blackspot flyingfish, volador lomo manchado
  Cheilopogon exsiliens (Linnaeus, 1771) -- valid -- bandwing flyingfish, volador bandeado, volador campechano
  Cheilopogon furcatus (Mitchill, 1815) -- valid -- spotfin flyingfish, volador ala manchada
  Cheilopogon heterurus (Rafinesque, 1810) -- valid -- Atlantic flyingfish, blotchwing flyingfish, volador ala lunada
  Cheilopogon melanurus (Valenciennes in Cuvier and Valenciennes, 1847) -- valid -- Atlantic flyingfish, volador blanquito, volador de banda estrecha
  Cheilopogon papilio (Clark, 1936) -- valid -- butterfly flyingfish, volador mariposa
  Cheilopogon pinnatibarbatus (Bennett, 1831) -- valid -- great blacktailed flyingfish, smallhead flyingfish, spotted flyingfish, volador cabecita
  Cheilopogon spilonotopterus (Bleeker, 1866) -- valid -- stained flyingfish, volador jaspeado
  Cheilopogon xenopterus (Gilbert, 1890) -- valid -- volador puntas blancas, whitetip flyingfish
  Cheilotrema saturnum (Girard, 1858) -- valid -- black croaker, corvinata negra
  Chesnonia verrucosa (Lockington, 1880) -- valid -- warty poacher
  Chilara taylori (Girard, 1858) -- valid -- congriperla moteada, spotted cusk-eel
  Chiloconger dentatus (Garman, 1899) -- valid -- congrio labioso, thicklip conger
  Chilomycterus antennatus (Cuvier, 1816) -- valid -- bridled burrfish, guanábana manchada
  Chilomycterus antillarum Jordan and Rutter, 1897 -- valid -- guanábana antillana, guanábana caribeña, web burrfish
  Chilomycterus atringa (Linnaeus, 1758) -- valid -- guanábana, spotted burrfish
  Chilomycterus reticulatus (Linnaeus, 1758) -- valid -- pez erizo enano, spotfin burrfish
  Chilomycterus schoepfii (Walbaum, 1792) -- valid -- burrfish, guanába rayada, guanábana rayada, porcupinefish, striped burrfish
  Chilorhinus suensonii Lütken, 1852 -- valid -- anguililla bembona, morena falsa bembona, seagrass eel
  Chimaeridae Bonaparte, 1831 -- valid -- chimaeras, chimères, quimeras, ratfishes, shortnose chimaeras, shortnosed chimaeras
  Chirolophis ascanii (Walbaum, 1792) -- valid -- Atlantic warbonnet, toupet marbré
  Chirolophis decoratus (Jordan and Snyder, 1902) -- valid -- decorated warbonnet
  Chirolophis nugator (Jordan and Williams in Jordan and Starks, 1895) -- valid -- mosshead warbonnet
  Chirolophis snyderi (Taranetz, 1938) -- valid -- bearded warbonnet
  Chirolophis tarsodes (Jordan and Snyder, 1902) -- valid -- matcheek warbonnet
  Chirostoma aculeatum Barbour, 1973 -- valid -- charal cuchillo, scowling silverside
  Chirostoma arge (Jordan and Snyder, 1899) -- valid -- charal del Verde, largetooth silverside
  Chirostoma attenuatum Meek, 1902 -- valid -- charal prieto, slender silverside
  Chirostoma bartoni Jordan and Evermann, 1896 -- valid -- Alberca silverside, charal de la Caldera
  Chirostoma chapalae Jordan and Snyder, 1899 -- valid -- charal de Chapala, smallmouth silverside
  Chirostoma charari (de Buen, 1945) -- valid -- charal tarasco, least silverside
  Chirostoma consocium Jordan and Hubbs, 1919 -- valid -- charal de rancho, ranch silverside
  Chirostoma estor Jordan, 1880 -- valid -- pescado blanco, pike silverside
  Chirostoma grandocule (Steindachner, 1894) -- valid -- bigeye silverside, charal de lago
  Chirostoma humboldtianum (Valenciennes in Cuvier and Valenciennes, 1835) -- valid -- charal de Xochimilco, shortfin silverside
  Chirostoma jordani Woolman, 1894 -- valid -- charal, charal, mesa silverside
  Chirostoma labarcae Meek, 1902 -- valid -- charal de La Barca, sharpnose silverside
  Chirostoma lucius Boulenger, 1900 -- valid -- charal de la Laguna, longjaw silverside
  Chirostoma melanoccus Alvarez, 1963 -- valid -- blunthead silverside, charal de San Juanico
  Chirostoma mezquital Meek, 1904 -- invalid -- charal del Mezquital, Mezquital silverside
  Chirostoma patzcuaro Meek, 1902 -- valid -- charal pinto, Patzcuaro silverside
  Chirostoma promelas Jordan and Snyder, 1899 -- valid -- blacknose silverside, charal boca negra
  Chirostoma riojai Solórzano and López, 1966 -- valid -- charal de Santiago, Toluca silverside
  Chirostoma sphyraena Boulenger, 1900 -- valid -- bigmouth silverside, charal barracuda
  Chitala ornata (Gray, 1831) -- valid -- clown knifefish
  Chitonotus pugetensis (Steindachner, 1876) -- valid -- charrasco espalda rugosa, roughback sculpin
  Chlamydoselachidae Garman, 1884 -- valid -- frill sharks, frilled sharks, requins-lézards, tiburones anguila
  Chlamydoselachus anguineus Garman, 1884 -- valid -- frill shark, frilled shark, tiburón anguila
  Chlopsidae -- valid -- false morays, fausses murènes, morenas falsas
  Chlopsis apterus (Beebe and Tee-van, 1938) -- valid -- morena falsa hocico rayado, stripesnout false moray
  Chlopsis bicolor Rafinesque, 1810 -- valid -- bicolor eel
  Chlopsis dentatus (Seale, 1917) -- valid -- anguililla moteada, morena falsa dientona, mottled false moray
  Chlorophthalmidae -- valid -- greeneyes, ojiverdes, yeux-verts
  Chlorophthalmus agassizi Bonaparte, 1840 -- valid -- ojiverde chato, ojiverde ñato, shortnose greeneye
  Chloroscombrus chrysurus (Linnaeus, 1766) -- valid -- Atlantic bumper, casabe, horqueta del Atlántico
  Chloroscombrus orqueta Jordan and Gilbert, 1883 -- valid -- horqueta del Pacífico, Pacific bumper
  Chologaster cornuta Agassiz, 1853 -- valid -- swampfish
  Chriodorus atherinoides Goode and Bean, 1882 -- valid -- hardhead halfbeak, pajarito cabezidura, pejerrey
  Chriolepis benthonis Ginsburg, 1953 -- valid -- deepwater goby, gobio de agua profunda
  Chriolepis cuneata Bussing, 1990 -- valid -- gobio carril, rail goby
  Chriolepis minutillus Gilbert, 1892 -- valid -- gobio conchalero, rubble goby
  Chriolepis vespa Hastings and Bortone, 1981 -- valid -- wasp goby
  Chriolepis zebra Ginsburg, 1938 -- valid -- gecko goby, gobio salamanquesa
  Chromis alta Greenfield and Woods, 1980 -- valid -- castañeta alta, silverstripe chromis
  Chromis atrilobata Gill, 1862 -- valid -- Castañeta, castañeta cola de tijera, scissortail chromis
  Chromis cyanea (Poey, 1860) -- valid -- blue chromis, castañeta azul, cromis azul
  Chromis enchrysura Jordan and Gilbert, 1882 -- valid -- castañeta coliamarilla, yellowtail reeffish
  Chromis insolata (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- castañeta sol, cromis sol, sunshinefish
  Chromis limbaughi Greenfield and Woods, 1980 -- valid -- blue-and-yellow chromis, castañeta mexicana
  Chromis multilineata (Guichenot, 1853) -- valid -- brown chromis, castañeta parda, cromis prieto
  Chromis punctipinnis (Cooper, 1863) -- valid -- blacksmith, castañeta herrera
  Chromis scotti Emery, 1968 -- valid -- castañeta púrpura, cromis púrpura, purple reeffish
  Cichla ocellaris Bloch and Schneider, 1801 -- valid -- butterfly peacock bass, peacock cichlid
  Cichlasoma beani (Jordan, 1889) -- valid -- green guapote, mojarra de Sinaloa, Sinaloa cichlid
  Cichlasoma bimaculatum (Linnaeus, 1758) -- valid -- black acara, twospotted cichlid
  Cichlasoma citrinellum (Günther, 1864) -- invalid -- midas cichlid
  Cichlasoma cyanoguttatum (Baird and Girard, 1854) -- invalid -- mojarra del norte, Rio Grande cichlid, Rio Grande perch
  Cichlasoma friedrichsthalii (Heckel, 1840) -- invalid -- Friedrichsthal's cichlid, mojarra del San Juan, yellowjacket
  Cichlasoma grammodes Taylor and Miller, 1980 -- valid -- Chiapa de Corzo cichlid, mojarra del Chiapa de Corzo
  Cichlasoma istlanum (Jordan and Snyder, 1899) -- valid -- mojarra del Balsas, redside cichlid
  Cichlasoma managuense (Günther, 1867) -- invalid -- jaguar guapote, Managua cichlid, mojarra de Managua
  Cichlasoma meeki (Brind, 1918) -- invalid -- firemouth cichlid, mojarra boca de fuego
  Cichlasoma motaguense (Günther, 1867) -- invalid -- mojarra del Motagua, Motagua cichlid
  Cichlasoma nigrofasciatum (Günther, 1867) -- invalid -- convict cichlid, mojarra convicto, zebra cichlid
  Cichlasoma octofasciatum (Regan, 1903) -- invalid -- eightbanded cichlid, Jack Dempsey, mojarra castarrica
  Cichlasoma salvini (Günther, 1862) -- valid -- guapote tricolor, Salvin's cichlid, yellowbelly cichlid
  Cichlasoma spilurum (Günther, 1862) -- invalid -- blue-eye cichla, blue-eye cichlid, mojarra yucateca
  Cichlasoma trimaculatum (Günther, 1867) -- valid -- mojarra prieta, threespot cichlid
  Cichlasoma ufermanni (Allgayer, 2002) -- valid -- mojarra del Usumacinta, Usumacinta cichlid
  Cichlasoma urophthalmus (Günther, 1862) -- invalid -- Mayan cichlid, mojarra del sureste
  Cichlidae -- valid -- cichlidés, cichlids, tilapias y mojarras de agua dulce
  Ciliata septentrionalis (Collett, 1875) -- valid -- northern rockling
  Cirrhigaleus asper (Merrett, 1973) -- valid -- roughskin dogfish, roughskin dogshark, roughskin spurdog
  Cirrhitichthys oxycephalus (Bleeker, 1855) -- valid -- coral hawkfish, halcón de coral
  Cirrhitidae -- valid -- halcones, hawkfishes, poissons-éperviers
  Cirrhitus rivulatus Valenciennes, 1846 -- valid -- chino mero, giant hawkfish
  Cirriemblemaria lucasana (Stephens, 1963) -- valid -- plume blenny, tubícola plumoso
  Citharichthys abbotti Dawson, 1969 -- valid -- lenguado veracruzano, Veracruz whiff, Veracruz Whiff
  Citharichthys arctifrons Goode, 1880 -- valid -- Gulf Stream flounder, Gulf Stream Flounder, lenguado golfino, plie du gulf stream
  Citharichthys arenaceus Evermann & Marsh, 1900 -- valid -- lenguado arenero, Sand Whiff, sand whiff
  Citharichthys cornutus (Günther, 1880) -- valid -- horned whiff, Horned Whiff, lenguado cornudo
  Citharichthys dinoceros Goode & Bean, 1886 -- valid -- lenguado espinoso, spined whiff, Spined Whiff
  Citharichthys fragilis Gilbert, 1890 -- valid -- Gulf sanddab, Gulf Sanddab, lenguado flaco
  Citharichthys gilberti Jenkins & Evermann, 1889 -- valid -- bigmouth sanddab, Bigmouth Sanddab, lenguado tapadera
  Citharichthys gordae Beebe & Tee-Van, 1938 -- valid -- lenguado escondido, mimic sanddab, Mimic Sanddab
  Citharichthys gymnorhinus Gutherz & Blackman, 1970 -- valid -- anglefin whiff, Anglefin Whiff
  Citharichthys macrops Dresel, 1885 -- valid -- lenguado manchado, Spotted Whiff, spotted whiff
  Citharichthys mariajorisae van der Heiden & Mussot-Pérez, 1995 -- valid -- five-rayed sanddab, Five-rayed Sanddab, lenguado cinco radios
  Citharichthys platophrys Gilbert, 1891 -- valid -- lenguado frentón, small sanddab, Small Sanddab
  Citharichthys sordidus (Girard, 1854) -- valid -- lenguado moteado, limande sordide, Pacific Sanddab, Pacific sanddab
  Citharichthys spilopterus Günther, 1862 -- valid -- bay whiff, Bay Whiff, lenguado pardo
  Citharichthys stigmaeus Jordan & Gilbert, 1882 -- valid -- lenguado pecoso, limande tachetée, Speckled Sanddab, speckled sanddab
  Citharichthys uhleri Jordan in Jordan & Goss, 1889 -- valid -- lenguado albimoteado, voodoo whiff, Voodoo Whiff
  Citharichthys xanthostigma Gilbert, 1890 -- valid -- lenguado alón, Longfin Sanddab, longfin sanddab
  Clarias batrachus (Linnaeus, 1758) -- valid -- clarias catfish, walking catfish
  Clariidae Bonaparte, 1846 -- valid -- airbreathing catfishes, bagres laberintos, labyrinth catfishes, poissons-chats à labyrinths
  Clarkichthys bilineatus (Clark, 1936) -- valid -- flagtail wormfish, pez lombriz colibandera
  Clepticus parrae (Bloch and Schneider, 1801) -- valid -- creole wrasse, doncella mulata, rabirrubia genízara
  Clevelandia ios (Jordan and Gilbert, 1882) -- valid -- arrow goby, gobio flecha
  Clinidae -- valid -- cabillauds, clinides, clinids, clinies, kelp blennies, kelpfishes, klipfishes, sargaceros, scaled blennies
  Clinocottus acuticeps (Gilbert, 1896) -- valid -- sharpnose sculpin
  Clinocottus analis (Girard, 1858) -- valid -- charrasco lanudo, woolly sculpin
  Clinocottus embryum (Jordan and Starks, 1895) -- valid -- calico sculpin, charrasco angaripola
  Clinocottus globiceps (Girard, 1858) -- valid -- mosshead sculpin
  Clinocottus recalvus (Greeley, 1899) -- valid -- bald sculpin, charrasco pelón
  Clinostomus elongatus (Kirtland, 1840) -- valid -- redside dace
  Clinostomus funduloides Girard, 1856 -- valid -- rosyside dace
  Clupea harengus Linnaeus, 1758 -- valid -- Atlantic herring, Baltic herring, hareng atlantique, herring
  Clupea pallasii Valenciennes in Cuvier and Valenciennes, 1847 -- valid -- arenque del Pacífico, Pacific herring
  Clupeidae -- valid -- aloses, harengs, herrings, menhadens, pilchards, sardinas, sardines, sardines, shads, sprats, sprats
  Clupeiformes -- valid -- anchois, anchovies, harengs, herrings
  Cobitidae -- valid -- loaches, lochas, loches
  Cololabis saira (Brevoort, 1856) -- valid -- Pacific saury, paparda del Pacífico
  Colpichthys hubbsi Crabtree, 1989 -- valid -- delta silverside, pejerrey delta
  Colpichthys regis (Jenkins and Evermann, 1889) -- valid -- false grunion, pejerrey charal, pez del rey
  Conger oceanicus (Mitchill, 1818) -- valid -- conger eel
  Conger triporiceps Kanazawa, 1958 -- valid -- congrio dentudo, manytooth conger
  Congridae -- valid -- conger eels, congers, congres, congrios
  Conodon nobilis (Linnaeus, 1758) -- valid -- barred grunt, ronco canario
  Conodon serrifer Jordan and Gilbert, 1882 -- valid -- armed grunt, ronco ofensivo
  Cookeolus japonicus (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- bulleye, catalufa aleta larga
  Coralliozetus angelicus (Böhlke and Mead, 1957) -- valid -- angel blenny, tubícola ángel
  Coralliozetus boehlkei Stephens, 1963 -- valid -- barcheek blenny, tubícola cachete rayado
  Coralliozetus micropes (Beebe and Tee-van, 1938) -- valid -- tubícola cara de cebra, zebraface blenny
  Coralliozetus rosenblatti Stephens, 1963 -- valid -- spikefin blenny, tubícola espiga
  Coregonus artedi Lesueur, 1818 -- valid -- cisco, cisco de lac, lake herring
  Coregonus autumnalis (Pallas, 1776) -- valid -- Arctic cisco
  Coregonus clupeaformis (Mitchill, 1818) -- valid -- grand corégone, lake whitefish
  Coregonus hoyi (Milner, 1874) -- valid -- bloater
  Coregonus huntsmani Scott, 1987 -- valid -- Acadian whitefish, Atlantic whitefish
  Coregonus johannae (Wagner, 1910) -- valid -- deepwater cisco
  Coregonus kiyi (Koelz, 1921) -- valid -- kiyi
  Coregonus laurettae Bean, 1881 -- valid -- Bering cisco
  Coregonus nasus (Pallas, 1776) -- valid -- broad whitefish
  Coregonus nigripinnis (Milner, 1874) -- valid -- blackfin cisco
  Coregonus pidschian (Gmelin, 1789) -- valid -- humpback whitefish
  Coregonus reighardi (Koelz, 1924) -- valid -- shortnose cisco
  Coregonus sardinella Valenciennes in Cuvier and Valenciennes, 1848 -- valid -- least cisco
  Coregonus zenithicus (Jordan and Evermann, 1909) -- valid -- longjaw cisco, shortjaw cisco
  Corniger spinosus Agassiz in Spix and Agassiz, 1831 -- valid -- candil espinoso, spinycheek soldierfish
  Corvula macrops (Steindachner, 1876) -- valid -- corvineta vacuoqua, vacoucua, vacoucua, vacuoqua croaker
  Coryphaena equiselis Linnaeus, 1758 -- valid -- dorado enano, pompano dolphin, pompano dolphinfish
  Coryphaena hippurus Linnaeus, 1758 -- valid -- dolphin, dolphinfish, dorado
  Coryphaenidae -- valid -- coryphènes, dolphinfishes, dolphins, dorados, dorados
  Coryphopterus alloides Böhlke and Robins, 1960 -- valid -- barfin goby
  Coryphopterus dicrus Böhlke and Robins, 1960 -- valid -- colon goby, gobio colón, gobio dos puntos
  Coryphopterus eidolon Böhlke and Robins, 1960 -- valid -- gobio pálido, pallid goby
  Coryphopterus glaucofraenum Gill, 1863 -- valid -- bridled goby, gobio con brida, gobio de riendas
  Coryphopterus hyalinus Böhlke and Robins, 1962 -- valid -- glass goby, gobio cristal, gobio de cristal
  Coryphopterus lipernes Böhlke and Robins, 1962 -- valid -- gobio linterna, peppermint goby
  Coryphopterus personatus (Jordan and Thompson, 1905) -- valid -- gobio enmascarado, gobio mapache, masked goby
  Coryphopterus punctipectophorus Springer, 1960 -- valid -- gobio punteado, spotted goby
  Coryphopterus thrix Böhlke and Robins, 1960 -- valid -- bartail goby, gobio listado
  Coryphopterus tortugae (Jordan, 1904) -- invalid -- sand goby
  Coryphopterus urospilus Ginsburg, 1938 -- valid -- gobio semáforo, redlight goby
  Cosmocampus albirostris (Kaup, 1856) -- valid -- pez pipa hocico blanco, whitenose pipefish
  Cosmocampus arctus (Jenkins and Evermann, 1889) -- valid -- pez pipa chato, snubnose pipefish
  Cosmocampus brachycephalus (Poey, 1868) -- valid -- crested pipefish, pez pipa crestado, trompetero ñato
  Cosmocampus elucens (Poey, 1868) -- valid -- pez pipa aletilla, shortfin pipefish, trompetero brillante
  Cosmocampus hildebrandi (Herald, 1965) -- valid -- dwarf pipefish
  Cosmocampus profundus (Herald, 1965) -- valid -- deepwater pipefish, pez pipa de lo alto
  Cottidae -- valid -- bullheads, chabots, chabots de mer, charrascos espinosos, scaleless sculpins, scorpions de mer, sculpins
  Cottunculus microps Collett, 1875 -- valid -- Arctic sculpin, cotte polaire, polar sculpin
  Cottus aleuticus Gilbert, 1896 -- valid -- coastrange sculpin
  Cottus asper Richardson, 1836 -- valid -- prickly sculpin
  Cottus asperrimus Rutter, 1908 -- valid -- rough sculpin
  Cottus baileyi Robins, 1961 -- valid -- black sculpin
  Cottus bairdii Girard, 1850 -- valid -- chabot tacheté, mottled sculpin
  Cottus beldingii Eigenmann and Eigenmann, 1891 -- valid -- Paiute sculpin
  Cottus bendirei (Bean, 1881) -- valid -- Malheur sculpin
  Cottus caeruleomentum Kinziger, Raesly and Neely, 2000 -- valid -- Blue Ridge sculpin
  Cottus carolinae (Gill, 1861) -- valid -- banded sculpin
  Cottus cognatus Richardson, 1836 -- valid -- chabot visqueux, slimy sculpin
  Cottus confusus Bailey and Bond, 1963 -- valid -- shorthead sculpin
  Cottus echinatus Bailey and Bond, 1963 -- valid -- Utah Lake sculpin
  Cottus extensus Bailey and Bond, 1963 -- valid -- Bear Lake sculpin
  Cottus girardi Robins, 1961 -- valid -- Potomac sculpin
  Cottus greenei (Gilbert and Culver in Jordan and Evermann, 1898) -- valid -- Shoshone sculpin
  Cottus gulosus (Girard, 1854) -- valid -- riffle sculpin
  Cottus hubbsi Bailey and Dimick, 1949 -- valid -- Columbia sculpin
  Cottus hypselurus Robins and Robison, 1985 -- valid -- Ozark sculpin, Wood River sculpin
  Cottus klamathensis Gilbert, 1898 -- valid -- marbled sculpin
  Cottus leiopomus Gilbert and Evermann, 1894 -- valid -- Wood River sculpin
  Cottus marginatus (Bean, 1881) -- valid -- margined sculpin
  Cottus paulus Williams, 2000 -- valid -- pygmy sculpin
  Cottus perplexus Gilbert and Evermann, 1894 -- valid -- reticulate sculpin
  Cottus pitensis Bailey and Bond, 1963 -- valid -- Pit sculpin
  Cottus princeps Gilbert, 1898 -- valid -- Klamath Lake sculpin
  Cottus rhotheus (Smith, 1882) -- valid -- torrent sculpin
  Cottus ricei (Nelson, 1876) -- valid -- chabot à tête plate, spoonhead sculpin
  Cottus tenuis (Evermann and Meek, 1898) -- valid -- slender sculpin
  Couesius plumbeus (Agassiz, 1850) -- valid -- lake chub, méné de lac
  Crenichthys baileyi (Gilbert, 1893) -- valid -- White River springfish
  Crenichthys nevadae Hubbs, 1932 -- valid -- Railroad Valley springfish
  Crocodilichthys gracilis Allen and Robertson, 1991 -- valid -- lagartija tres aletas, lizard triplefin
  Cryptacanthodes aleutensis (Gilbert, 1896) -- valid -- dwarf wrymouth
  Cryptacanthodes giganteus (Kittlitz, 1858) -- valid -- giant wrymouth
  Cryptacanthodes maculatus Storer, 1839 -- valid -- terrassier tacheté, terrassier tâcheté, wrymouth
  Cryptacanthodidae Gill, 1861 -- valid -- risueños, terrassiers, wrymouths
  Cryptopsaras couesii Gill, 1883 -- valid -- anzuelo diablo, diablo marino, pêcheur à trèfle, triplewart seadevil, warted seadevil
  Cryptotomus roseus Cope, 1871 -- valid -- bluelip parrotfish, loro bembiazul, loro chimuelo
  Cryptotrema corallinum Gilbert, 1890 -- valid -- deepwater blenny, trambollo de profundidad
  Cryptotrema seftoni Hubbs, 1954 -- valid -- hidden blenny, trambollo escondido
  Crystallaria asprella (Jordan, 1878) -- valid -- crystal darter
  Crystallichthys cyclospilus Gilbert and Burke, 1912 -- valid -- blotched snailfish
  Ctenogobius boleosoma (Jordan and Gilbert, 1882) -- valid -- darter goby, esmeralda flechera, madrejuile
  Ctenogobius claytonii (Meek, 1902) -- valid -- gobio mexicano, Mexican goby
  Ctenogobius fasciatus Gill, 1858 -- valid -- blackbar goby, blotchcheek goby
  Ctenogobius manglicola (Jordan and Starks in Jordan, 1895) -- valid -- gobio de manglar, mangrove goby
  Ctenogobius pseudofasciatus (Gilbert and Randall in Gilbert and Kelso, 1971) -- valid -- slashcheek goby
  Ctenogobius saepepallens (Gilbert and Randall, 1968) -- valid -- dash goby, gobio guión
  Ctenogobius sagittula (Günther, 1861) -- valid -- gobio aguzado, longtail goby
  Ctenogobius shufeldti (Jordan and Eigenmann, 1887) -- valid -- freshwater goby
  Ctenogobius smaragdus (Valenciennes in Cuvier and Valenciennes, 1837) -- valid -- emerald goby, esmeralda cabezona
  Ctenogobius stigmaticus (Poey, 1860) -- valid -- esmeralda, marked goby
  Ctenogobius stigmaturus (Goode and Bean, 1882) -- valid -- spottail goby
  Ctenopharyngodon idella (Valenciennes in Cuvier and Valenciennes, 1844) -- valid -- carpa herbívora, grass carp, silver orfe
  Cualac tessellatus Miller, 1956 -- valid -- cachorrito de la Media Luna, checkered pupfish, Media Luna pupfish
  Cubiceps capensis (Smith, 1845) -- valid -- Cape cigarfish, Cape fathead
  Cubiceps paradoxus Butler, 1979 -- valid -- derivante colón, longfin cigarfish
  Cubiceps pauciradiatus Günther, 1872 -- valid -- bigeye cigarfish, derivante ojón, longfin fathead
  Culaea inconstans (Kirtland, 1840) -- valid -- brook stickleback, épinoche à cinq épines
  Cycleptus elongatus (Lesueur, 1817) -- valid -- blue sucker, matalote azul
  Cycleptus meridionalis Burr and Mayden, 1999 -- valid -- southeastern blue sucker
  Cyclopsetta chittendeni Bean, 1895 -- valid -- lenguado mexicano, Mexican Flounder, Mexican flounder
  Cyclopsetta fimbriata (Goode & Bean, 1885) -- valid -- lenguado aleta sucia, Spotfin Flounder, spotfin flounder
  Cyclopsetta panamensis (Steindachner, 1876) -- valid -- lenguado panámico, Panamic flounder, Panamic Flounder
  Cyclopsetta querna (Jordan & Bollman, 1890) -- valid -- lenguado dientón, toothed flounder, Toothed Flounder
  Cyclopteridae -- valid -- lumpfishes, lumpsuckers, peces grumo, poules de mer, snailfishes
  Cyclopteropsis mcalpini (Fowler, 1914) -- valid -- Arctic lumpsucker
  Cyclopterus lumpus Linnaeus, 1758 -- valid -- grosse poule de mer, lumpfish
  Cymatogaster aggregata Gibbons, 1854 -- valid -- mojarra brillosa, shiner perch
  Cynoglossidae -- valid -- lenguas, soles-langues, tongue soles, tonguefishes
  Cynoponticus coniceps (Jordan and Gilbert, 1882) -- valid -- conehead eel, congrio espantoso
  Cynoscion albus (Günther, 1864) -- valid -- corvina chiapaneca, queen corvina, white corvina, white corvina
  Cynoscion arenarius Ginsburg, 1930 -- valid -- corvina arenera, sand seatrout
  Cynoscion jamaicensis (Vaillant and Bocourt, 1883) -- valid -- corvina jamaica, Jamaica weakfish, mongolar drummer, mongolar drummer
  Cynoscion nannus Castro-Aguirre and Arvizu-Martinez, 1976 -- valid -- corvina enana, dwarf corvina
  Cynoscion nebulosus (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- corvina pinta, spotted seatrout
  Cynoscion nothus (Holbrook, 1848) -- valid -- corvina plateada, silver seatrout
  Cynoscion othonopterus Jordan and Gilbert, 1882 -- valid -- corvina golfina, Gulf corvina
  Cynoscion parvipinnis Ayres, 1861 -- valid -- corvina aleta corta, shortfin corvina
  Cynoscion phoxocephalus Jordan and Gilbert, 1882 -- valid -- corvina picuda, sharpnose corvina
  Cynoscion regalis (Bloch and Schneider, 1801) -- valid -- gray trout, sea trout, weakfish
  Cynoscion reticulatus (Günther, 1864) -- valid -- corvina rayada, striped corvina, striped corvina
  Cynoscion squamipinnis (Günther, 1867) -- valid -- corvina aguada, scalyfin corvina
  Cynoscion stolzmanni (Steindachner, 1879) -- valid -- corvina coliamarilla, yellowtail corvina
  Cynoscion xanthulus Jordan and Gilbert, 1882 -- valid -- corvina boquinaranja, orangemouth corvina
  Cyprinella alvarezdelvillari Contreras-Balderas and Lozano-Vilano, 1994 -- valid -- carpita tepehuana, Tepehuan shiner
  Cyprinella analostana Girard, 1859 -- valid -- satinfin shiner
  Cyprinella bocagrande (Chernoff and Miller, 1982) -- valid -- carpita bocagrande, largemouth shiner
  Cyprinella caerulea (Jordan, 1877) -- valid -- blue shiner
  Cyprinella callisema (Jordan, 1877) -- valid -- Ocmulgee shiner
  Cyprinella callistia (Jordan, 1877) -- valid -- Alabama shiner
  Cyprinella callitaenia (Bailey and Gibbs, 1956) -- valid -- bluestripe shiner
  Cyprinella camura (Jordan and Meek, 1884) -- valid -- bluntface shiner
  Cyprinella chloristia (Jordan and Brayton, 1878) -- valid -- greenfin shiner
  Cyprinella formosa (Girard, 1856) -- valid -- beautiful shiner, carpita yaqui
  Cyprinella galactura (Cope, 1868) -- valid -- whitetail shiner
  Cyprinella garmani (Jordan, 1885) -- valid -- carpita jorobada, gibbous shiner
  Cyprinella gibbsi (Howell and Williams, 1971) -- valid -- Tallapoosa shiner
  Cyprinella labrosa (Cope, 1870) -- valid -- thicklip chub, thicklip shiner
  Cyprinella leedsi (Fowler, 1942) -- valid -- bannerfin shiner
  Cyprinella lepida Girard, 1856 -- valid -- plateau shiner
  Cyprinella lutrensis (Baird and Girard, 1853) -- valid -- carpita roja, red shiner
  Cyprinella nivea (Cope, 1870) -- valid -- whitefin shiner
  Cyprinella ornata (Girard, 1856) -- valid -- carpita adornada, ornate shiner
  Cyprinella panarcys (Hubbs and Miller, 1978) -- valid -- carpita del Conchos, Conchos shiner
  Cyprinella proserpina (Girard, 1856) -- valid -- carpita río del norte, proserpine shiner
  Cyprinella pyrrhomelas (Cope, 1870) -- valid -- fieryblack shiner
  Cyprinella rutila (Girard, 1856) -- valid -- carpita regiomontana, Mexican red shiner
  Cyprinella spiloptera (Cope, 1867) -- valid -- méné bleu, spotfin shiner
  Cyprinella trichroistia (Jordan and Gilbert in Jordan and Brayton, 1878) -- valid -- tricolor shiner
  Cyprinella venusta Girard, 1856 -- valid -- blacktail shiner, carpita colinegra
  Cyprinella whipplei Girard, 1856 -- valid -- steelcolor shiner
  Cyprinella whipplii Girard, 1856 -- invalid
  Cyprinella xaenura (Jordan, 1877) -- valid -- Altamaha shiner
  Cyprinella xanthicara (Minckley and Lytle, 1969) -- valid -- carpita de Cuatro Ciénegas, Cuatro Cienegas shiner
  Cyprinella zanema (Jordan and Brayton, 1878) -- invalid -- Santee chub, Santee shiner
  Cyprinidae -- valid -- carpas, carpas y carpitas, carpes, carpes et ménés, carpitas, carps, carps and minnows, ménés, minnows
  Cypriniformes -- valid -- cyprins, meuniers, minnows, suckers
  Cyprinodon albivelis Minckley and Miller in Minckley, Miller and Norris, 2002 -- valid -- cachorrito aletas blancas, whitefin pupfish
  Cyprinodon alvarezi Miller, 1976 -- valid -- cachorrito de Potosí, Potosi pupfish
  Cyprinodon arcuatus Minckley and Miller in Minckley, Miller and Norris, 2002 -- valid -- Santa Cruz pupfish
  Cyprinodon artifrons Hubbs, 1936 -- valid -- bolín petota, Yucatan pupfish
  Cyprinodon atrorus Miller, 1968 -- valid -- bolson pupfish, cachorrito del bolsón
  Cyprinodon beltrani Alvarez, 1949 -- valid -- blackfin pupfish, cachorrito lodero
  Cyprinodon bifasciatus Miller, 1968 -- valid -- cachorrito de Cuatro Ciénegas, Cuatro Cienegas pupfish
  Cyprinodon bobmilleri Lozano-Vilano and Contreras-Balderas, 1993 -- valid -- cachorrito de San Ignacio, San Ignacio pupfish
  Cyprinodon bovinus Baird and Girard, 1853 -- valid -- Leon Springs pupfish
  Cyprinodon ceciliae Lozano-Vilano and Contreras-Balderas, 1993 -- valid -- cachorrito de Villa López, Villa Lopez pupfish
  Cyprinodon diabolis Wales, 1930 -- valid -- Devil's Hole pupfish, Devils Hole pupfish
  Cyprinodon elegans Baird and Girard, 1853 -- valid -- Comanche Springs pupfish
  Cyprinodon esconditus Strecker, 2002 -- valid -- cachorrito escondido, hidden pupfish
  Cyprinodon eximius Girard, 1859 -- valid -- cachorrito del Conchos, Conchos pupfish
  Cyprinodon fontinalis Smith and Miller, 1980 -- valid -- cachorrito de Carbonera, Carbonera pupfish
  Cyprinodon inmemoriam Lozano-Vilano and Contreras-Balderas, 1993 -- valid -- cachorrito de Charco Azul, Charco Azul pupfish
  Cyprinodon labiosus Humphries and Miller, 1981 -- valid -- cachorrito cangrejero, thicklip pupfish
  Cyprinodon latifasciatus Garman, 1881 -- valid -- cachorrito de Parras, Parras pupfish
  Cyprinodon longidorsalis Lozano-Vilano and Contreras-Balderas, 1993 -- valid -- cachorrito de La Palma, La Palma pupfish
  Cyprinodon macrolepis Miller, 1976 -- valid -- bigscale pupfish, cachorrito escamudo
  Cyprinodon macularius Baird and Girard, 1853 -- valid -- cachorrito del desierto, desert pupfish
  Cyprinodon maya Humphries and Miller, 1981 -- valid -- cachorrito gigante, Maya pupfish
  Cyprinodon meeki Miller, 1976 -- valid -- cachorrito del Mezquital, Mezquital pupfish
  Cyprinodon nazas Miller, 1976 -- valid -- cachorrito del Nazas, Nazas pupfish
  Cyprinodon nevadensis Eigenmann and Eigenmann, 1889 -- valid -- Amargosa pupfish
  Cyprinodon pachycephalus Minckley and Minckley, 1986 -- valid -- bighead pupfish, cachorrito cabezón
  Cyprinodon pecosensis Echelle and Echelle, 1978 -- valid -- Pecos pupfish
  Cyprinodon pisteri Miller and Minckley in Minckley, Miller and Norris, 2002 -- valid -- cachorrito de Palomas, Palomas pupfish
  Cyprinodon radiosus Miller, 1948 -- valid -- Owens pupfish
  Cyprinodon rubrofluviatilis Fowler, 1916 -- valid -- Red River pupfish
  Cyprinodon salinus Miller, 1943 -- valid -- Salt Creek pupfish
  Cyprinodon simus Humphries and Miller, 1981 -- valid -- boxer pupfish, cachorrito boxeador
  Cyprinodon tularosa Miller and Echelle, 1975 -- valid -- White Sands pupfish
  Cyprinodon variegatus Lacepède, 1803 -- valid -- bolín, pipón, sheepshead minnow, sheepshead pupfish
  Cyprinodon verecundus Humphries, 1984 -- valid -- cachorrito aletón, largefin pupfish
  Cyprinodon veronicae Lozano-Vilano and Contreras-Balderas, 1993 -- valid -- cachorrito de Charco Palma, Charco Palma pupfish
  Cyprinodontidae Gill, 1865 -- valid -- cachorritos, cyprinodontes, cyprinodontids, killifishes, pupfishes, toothcarps
  Cyprinus carpio Linnaeus, 1758 -- valid -- carpa común, carpe, common carp, European carp
  Cypselurus angusticeps Nichols and Breder, 1935 -- valid -- narrowhead flyingfish, volador isleño
  Cypselurus callopterus (Günther, 1866) -- valid -- beautyfin flyingfish, volador bonito
  Cypselurus comatus (Mitchill, 1815) -- valid -- clearwing flyingfish, volador de alas claras
  Cyttopsis rosea (Lowe, 1843) -- valid -- red dory, San Pedro rojo
  Dactylagnus mundus Gill, 1863 -- valid -- giant stargazer, miraestrellas gigante
  Dactylagnus parvus Dawson, 1976 -- valid -- miraestrellas panámica, Panamic stargazer
  Dactylopteridae -- valid -- alones, flying gurnards, grondins volants
  Dactylopterus volitans (Linnaeus, 1758) -- valid -- alón volador, flying gurnard, pez murciélago
  Dactyloscopidae -- valid -- miraestrellas, sand stargazers, télescopes
  Dactyloscopus amnis Miller and Briggs, 1962 -- valid -- miraestrellas ribereña, riverine stargazer
  Dactyloscopus byersi Dawson, 1969 -- valid -- miraestrellas coliranurada, notchtail stargazer
  Dactyloscopus crossotus Starks, 1913 -- valid -- bigeye stargazer
  Dactyloscopus foraminosus Dawson, 1982 -- valid -- reticulate stargazer
  Dactyloscopus lunaticus Gilbert, 1890 -- valid -- miraestrellas lunática, moonstruck stargazer
  Dactyloscopus metoecus Dawson, 1975 -- valid -- Mexican stargazer, miraestrellas mexicana
  Dactyloscopus minutus Dawson, 1975 -- valid -- miraestrellas chiquita, tiny stargazer
  Dactyloscopus moorei (Fowler, 1906) -- valid -- speckled stargazer
  Dactyloscopus tridigitatus Gill, 1859 -- valid -- miraestrellas ojilargo, mirón ojilargo, sand stargazer
  Dalatias licha (Bonnaterre, 1788) -- valid -- kitefin shark
  Dalatiidae Grey, 1851 -- valid -- kitefin sharks, laimargues, sleeper sharks, tiburones carochos
  Dallia pectoralis Bean, 1880 -- valid -- Alaska blackfish
  Dasyatidae Jordan, 1888 -- valid -- pastenagues, rayas látigo, stingrays, whip-tail stingrays, whiprays, whiptail stingrays
  Dasyatis americana Hildebrand and Schroeder, 1928 -- valid -- raya americana, raya látigo blanca, southern stingray
  Dasyatis centroura (Mitchill, 1815) -- valid -- clam cracker, roughtail stingray, stingaree
  Dasyatis dipterura (Jordan and Gilbert, 1880) -- valid -- diamond stingray, raya látigo diamante
  Dasyatis guttata (Bloch and Schneider, 1801) -- valid -- longnose stingray, raya látigo del Golfo, raya máxima
  Dasyatis sabina (Lesueur, 1824) -- valid -- Atlantic stingray, raya enana, raya látigo de espina
  Dasyatis say (Lesueur, 1817) -- valid -- bluntnose stingray, raya látigo chata, raya mediana
  Dasycottus setiger Bean, 1890 -- valid -- spinyhead sculpin
  Decapterus macarellus (Cuvier in Cuvier and Valenciennes, 1833) -- valid -- antonino caballita, macarela caballa, mackerel scad
  Decapterus macrosoma Bleeker, 1851 -- valid -- blue mackerel scad, blue mackerel scad, cherootfish, cherootfish, macarela alicorta, shortfin scad
  Decapterus muroadsi (Temminck and Schlegel, 1844) -- valid -- amberstripe scad, brownstriped mackerel scad, brownstriped mackerel scad, macarela plátano
  Decapterus punctatus (Cuvier, 1829) -- valid -- antonino punteado, macarela chuparaco, round scad
  Decapterus tabl Berry, 1968 -- valid -- redtail scad
  Decodon melasma Gomon, 1974 -- valid -- blackspot wrasse, viejita manchada
  Decodon puellaris (Poey, 1860) -- valid -- doncella de lo alto, red hogfish
  Deltistes luxatus (Cope, 1879) -- valid -- Lost River sucker
  Derilissus kremnobates Fraser, 1970 -- valid -- chupapiedra ojo estriado, whiskereye clingfish
  Dermatolepis dermatolepis (Boulenger, 1895) -- valid -- leather bass, mero cuero
  Dermatolepis inermis (Valenciennes in Cuvier and Valenciennes, 1833) -- valid -- cherna jaspeada, marbled grouper
  Desmodema lorum Rosenblatt and Butler, 1977 -- valid -- listoncillo látigo, whiptail ribbonfish
  Desmodema polystictum (Ogilby, 1898) -- valid -- polka-dot ribbonfish
  Dialommus macrocephalus (Günther, 1861) -- valid -- foureye rockskipper, trambollo listo
  Diaphus theta Eigenmann and Eigenmann, 1890 -- valid -- California headlightfish, linternilla californiana
  Diapterus auratus Ranzani, 1842 -- valid -- Irish pompano, mojarra guacha, patao común
  Diapterus aureolus (Jordan and Gilbert, 1882) -- valid -- golden mojarra, mojarra palometa
  Diapterus peruvianus (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- mojarra aletas amarillas, Peruvian mojarra
  Diapterus rhombeus (Cuvier, 1829) -- valid -- Caitipa mojarra, mojarra de estero, patao, rhombic mojarra, rhomboid mojarra
  Dibranchus atlanticus Peters, 1876 -- valid -- Atlantic batfish
  Diodon eydouxii Brisout de Barneville, 1846 -- valid -- pelagic porcupinefish, pez erizo pelágico
  Diodon holocanthus Linnaeus, 1758 -- valid -- balloonfish, hairy porcupinefish, pez erizo, pez erizo mapache
  Diodon hystrix Linnaeus, 1758 -- valid -- pez erizo pecoso, porcupinefish, puerco espín
  Diodontidae -- valid -- burrfishes, peces erizo, poissons porcs-épics, porcupinefishes
  Diogenichthys laternatus (Garman, 1899) -- valid -- Diogenes lanternfish, linternilla de Diogenes
  Dionda argentosa Girard, 1856 -- valid -- carpa de manantial, Manantial roundnose minnow
  Dionda catostomops Hubbs and Miller, 1977 -- valid -- carpa de Tamasopo, Pánuco minnow
  Dionda diaboli Hubbs and Brown, 1957 -- valid -- carpa diabla, Devils River minnow
  Dionda dichroma Hubbs and Miller, 1977 -- valid -- bicolor minnow, carpa bicolor
  Dionda episcopa Girard, 1856 -- valid -- carpa obispa, roundnose minnow
  Dionda erimyzonops Hubbs and Miller, 1974 -- valid -- carpa del Mante, chubsucker minnow
  Dionda ipni (Alvarez and Navarro, 1953) -- valid -- carpa veracruzana, lantern minnow
  Dionda mandibularis Contreras-Balderas and Verduzco-Martínez, 1977 -- valid -- carpa quijarona, flatjaw minnow
  Dionda melanops Girard, 1856 -- valid -- carpa manchada, spotted minnow
  Dionda nigrotaeniata (Cope, 1880) -- valid -- Guadalupe roundnose minnow
  Dionda rasconis (Jordan and Snyder, 1899) -- valid -- blackstripe minnow, carpa potosina
  Dionda serena Girard, 1856 -- valid -- Nueces roundnose minnow
  Diplectrum bivittatum (Valenciennes in Cuvier and Valenciennes, 1828) -- valid -- dwarf sand perch, serrano guabino
  Diplectrum eumelum Rosenblatt and Johnson, 1974 -- valid -- orange-spotted sand perch, serrano carabonita
  Diplectrum euryplectrum Jordan and Bollman, 1890 -- valid -- bighead sand perch, serrano extranjero
  Diplectrum formosum (Linnaeus, 1766) -- valid -- sand perch, serrano, serrano arenero
  Diplectrum labarum Rosenblatt and Johnson, 1974 -- valid -- highfin sand perch, serrano espinudo
  Diplectrum macropoma (Günther, 1864) -- valid -- Mexican sand perch, serrano mexicano
  Diplectrum maximum Hildebrand, 1946 -- valid -- greater sand perch, serrano de altura
  Diplectrum pacificum Meek and Hildebrand, 1925 -- valid -- Pacific sand perch, serrano cabaicucho
  Diplectrum rostrum Bortone, 1974 -- valid -- bridled sand perch, serrano frenado
  Diplectrum sciurus Gilbert, 1892 -- valid -- serrano ardilla, squirrel sand perch
  Diplobatis ommata (Jordan and Gilbert in Jordan and Bollman, 1890) -- valid -- bullseye electric ray, raya eléctrica diana
  Diplodus argenteus (Valenciennes in Cuvier and Valenciennes, 1830) -- valid -- silver porgy
  Diplodus holbrookii (Bean, 1878) -- valid -- sargo cotonero, spottail pinfish
  Diplogrammus pauciradiatus (Gill, 1865) -- valid -- dragoncillo moteado, spotted dragonet
  Diplospinus multistriatus Maul, 1948 -- valid -- escolar rayado, sable estirado, striped escolar
  Dipturus bullisi (Bigelow and Schroeder, 1962) -- valid -- lozenge skate, raya triangular, Tortugas skate
  Dipturus laevis (Mitchill, 1818) -- valid -- barndoor skate, grande raie
  Dipturus olseni (Bigelow and Schroeder, 1951) -- valid -- raya colona, spreadfin skate
  Doradidae Bleeker, 1858 -- valid -- bagres sierra, poissons-chats épineux, thorny catfishes
  Doratonotus megalepis Günther, 1862 -- valid -- doncella enana, dwarf wrasse
  Dormitator latifrons (Richardson, 1844) -- valid -- Pacific fat sleeper, puyeki
  Dormitator maculatus (Bloch, 1792) -- valid -- fat sleeper, guavina mapo, naca
  Dorosoma anale Meek, 1904 -- valid -- longfin gizzard shad, Mexican river gizzard shad, sardina del Papaloapan
  Dorosoma cepedianum (Lesueur, 1818) -- valid -- alose à gésier, American gizzard shad, eastern gizzard shad, gizzard shad, hickory shad, mud shad, sardina molleja, skipjack
  Dorosoma petenense (Günther, 1867) -- valid -- sardina maya, threadfin shad
  Dorosoma smithi Hubbs and Miller, 1941 -- valid -- Pacific gizzard shad, sardina norteña
  Doryrhamphus excisus Kaup, 1856 -- valid -- fantail pipefish, pez pipa chico
  Dysomma anguillare Barnard, 1923 -- valid -- anguila panzacorta, blind arrowtooth eel, shortbelly eel
  Echeneidae -- valid -- remoras, rémoras, rémoras, sharksuckers
  Echeneis naucrates Linnaeus, 1758 -- valid -- guaicán, rémora rayada, sharksucker
  Echeneis neucratoides Zuiew, 1786 -- valid -- rémora filoblanco, whitefin sharksucker
  Echidna catenata (Bloch, 1795) -- valid -- chain moray, morena cadena, morena jaspeada
  Echidna nebulosa (Ahl, 1789) -- valid -- morena estrellada, starry moray, white moray
  Echidna nocturna (Cope, 1872) -- valid -- morena pecosa, palenose moray
  Echinorhinidae Gill, 1862 -- valid -- bramble sharks, squales bouclés, tiburones espinosos
  Echinorhinus brucus (Bonnaterre, 1788) -- valid -- bramble shark
  Echinorhinus cookei Pietschmann, 1928 -- valid -- prickly shark, tiburón espinoso negro
  Echiodon dawsoni Williams and Shipp, 1982 -- valid -- chain pearlfish
  Echiodon exsilium Rosenblatt, 1961 -- valid -- nocturnal pearlfish, perlero nocturno
  Echiophis brunneus (Castro-Aguirre and Suárez de los Cobos, 1983) -- valid -- fangjaw eel, tieso colmillón
  Echiophis intertinctus (Richardson, 1848) -- valid -- safío dentudo lunado, spotted spoon-nose eel, tieso cucharón manchado
  Echiophis punctifer (Kaup, 1860) -- valid -- safío dentudo punteado, snapper eel, stippled spoon-nose eel, tieso pecoso
  Ekemblemaria myersi Stephens, 1963 -- valid -- reef-sand blenny, tubícola de cejas
  Elacatinus digueti (Pellegrin, 1901) -- valid -- banded cleaning goby, gobio barbero, redhead goby
  Elacatinus evelynae (Böhlke and Robins, 1968) -- valid -- gobio hocicudo, gobio tiburoncito, sharknose goby, sharpnose goby
  Elacatinus genie (Böhlke and Robins, 1968) -- valid -- cleaner goby, cleaning goby, gobio limpiador
  Elacatinus horsti (Metzelaar, 1922) -- valid -- gobio de banda amarilla, yellowline goby
  Elacatinus illecebrosus (Böhlke and Robins, 1968) -- valid -- barsnout goby, gobio seductor
  Elacatinus janssi Bussing, 1981 -- valid -- gobio lomopintado, spotback goby
  Elacatinus limbaughi Hoese and Reader, 2001 -- valid -- gobio insólito, widebanded cleaning goby
  Elacatinus louisae (Böhlke and Robins, 1968) -- valid -- gobio farol, spotlight goby
  Elacatinus macrodon (Beebe and Tee-Van, 1928) -- valid -- gobio tigre, tiger goby
  Elacatinus oceanops Jordan, 1904 -- valid -- neon goby
  Elacatinus prochilos (Böhlke and Robins, 1968) -- valid -- broadstripe goby, gobio bordeado
  Elacatinus puncticulatus (Ginsburg, 1938) -- invalid -- gobio cabeza roja, redhead goby
  Elacatinus xanthiprora (Böhlke and Robins, 1968) -- valid -- yellowprow goby
  Elagatis bipinnulata (Quoy and Gaimard, 1825) -- valid -- macarela salmón, rainbow runner, salmón cubano
  Elasmobranchii -- valid -- cartilaginous fishes, rays, sharks, skates, torpedoes
  Elassoma alabamae Mayden, 1993 -- valid -- spring pygmy sunfish
  Elassoma boehlkei Rohde and Arndt, 1987 -- valid -- Carolina pygmy sunfish
  Elassoma evergladei Jordan, 1884 -- valid -- Everglades pygmy sunfish
  Elassoma okatie Rohde and Arndt, 1987 -- valid -- bluebarred pygmy sunfish
  Elassoma okefenokee Böhlke, 1956 -- valid -- Okefenokee pygmy sunfish
  Elassoma zonatum Jordan, 1877 -- valid -- banded pygmy sunfish
  Elassomatidae -- valid -- crapets-pygmées, pygmy sunfishes, solecitos
  Elattarchus archidium (Jordan and Gilbert, 1882) -- valid -- bluestreak drum, corvineta gallinita
  Eleginus gracilis (Tilesius, 1810) -- valid -- saffron cod
  Eleotridae -- valid -- dormeurs, guavinas, sleepers
  Eleotris amblyopsis (Cope, 1871) -- valid -- dormilón oscuro, largescaled spinycheek sleeper
  Eleotris perniger (Cope, 1871) -- valid -- guavina espinosa, smallscaled spinycheek sleeper
  Eleotris picta Kner, 1863 -- valid -- guavina machada, spotted sleeper
  Elopidae -- valid -- bigeyed herrings, guinées, ladyfishes, machetes, tarpons, tenpounders
  Elopiformes -- valid -- tarpons
  Elops affinis Regan, 1909 -- valid -- machete, machete del Pacífico
  Elops saurus Linnaeus, 1766 -- valid -- banano, ladyfish, machete del Atlántico
  Embassichthys bathybius (Gilbert, 1890) -- valid -- deepsea sole, Deepsea Sole, platija de profundidad, plie de profondeur
  Embiotoca jacksoni Agassiz, 1853 -- valid -- black perch, mojarra negra
  Embiotoca lateralis Agassiz, 1854 -- valid -- mojarra azul, striped seaperch
  Embiotocidae -- valid -- mojarras vivíparas, perches vivipares, surf perches, surfperches
  Emblemaria atlantica Jordan and Evermann, 1898 -- valid -- banner blenny
  Emblemaria hypacanthus (Jenkins and Evermann, 1889) -- valid -- Gulf signal blenny, tubícola flamante
  Emblemaria pandionis Evermann and Marsh, 1900 -- valid -- sailfin blenny, sapito dragón, tubícola dragón
  Emblemaria piratica Ginsburg, 1942 -- valid -- sailfin signal blenny, tubícola bandera
  Emblemaria piratula Ginsburg and Reid in Ginsburg, 1942 -- valid -- pirate blenny
  Emblemaria walkeri Stephens, 1963 -- valid -- elusive signal blenny, tubícola fugaz
  Emblemariopsis bahamensis Stephens, 1961 -- valid -- blackhead blenny, tubícola cabezinegro
  Emblemariopsis occidentalis Stephens, 1970 -- valid -- redspine blenny, sapito aletón, tubícola espina roja
  Emblemariopsis pricei Greenfield, 1975 -- valid -- seafan blenny, tubícola gorgonio
  Emblemariopsis signifera (Ginsburg, 1942) -- valid -- flagfin blenny, sapito aletón, tubícola aletón
  Emmelichthyidae -- valid -- andorreros, bonnetmouths, poissons-rubis, rovers
  Emmelichthyops atlanticus Schultz, 1945 -- valid -- bonnetmouth
  Emmelichthys ruber (Trunov, 1976) -- valid -- red rover
  Empetrichthys latos Miller, 1948 -- valid -- Pahrump killifish, Pahrump poolfish
  Empetrichthys merriami Gilbert, 1893 -- valid -- Ash Meadows killifish, Ash Meadows poolfish
  Encheliophis dubius (Putnam, 1874) -- invalid -- Pacific pearlfish, perlero del Pacífico
  Encheliophis vermicularis Müller, 1842 -- valid -- finless pearlfish, perlero mocho
  Enchelycore carychroa Böhlke and Böhlke, 1976 -- valid -- chestnut moray, morena castaña, morena parda
  Enchelycore nigricans (Bonnaterre, 1788) -- valid -- morena mulata, morena víbora, viper moray
  Enchelycore octaviana (Myers and Wade, 1941) -- valid -- morena octaviana, slenderjaw moray
  Enchelyopus cimbrius (Linnaeus, 1766) -- valid -- fourbeard rockling, motelle à quatre barbillons
  Engraulidae -- valid -- anchoas, anchois, anchovies
  Engraulis eurystole (Swain and Meek, 1884) -- valid -- camiguana anchovy, silver anchovy
  Engraulis mordax Girard, 1854 -- valid -- anchoveta norteña, Californian anchoveta, North Pacific anchovy, northern anchovy
  Engyophrys sanctilaurentii Jordan & Bollman, 1890 -- valid -- lenguado colimanchada, speckledtail flounder, Speckledtail Flounder
  Engyophrys senta Ginsburg, 1933 -- valid -- lenguado ojicornudo, Spiny Flounder, spiny flounder
  Enneacanthus chaetodon (Baird, 1855) -- valid -- blackbanded sunfish
  Enneacanthus gloriosus (Holbrook, 1855) -- valid -- bluespotted sunfish
  Enneacanthus obesus (Girard, 1854) -- valid -- banded sunfish, diamond sunfish, little sunfish
  Enneanectes altivelis Rosenblatt, 1960 -- valid -- lofty triplefin, sapito barreado, tres aletas de barras
  Enneanectes atrorus Rosenblatt, 1960 -- valid -- blackedge triplefin, blackedge triplefin, sapito orleado, tres aletas orlado
  Enneanectes boehlkei Rosenblatt, 1960 -- valid -- roughhead triplefin, sapito rugoso, tres aletas rugoso
  Enneanectes jordani (Evermann and Marsh, 1899) -- valid -- mimic triplefin, mimic triplefin, sapito tres aletas, tres aletas escondido
  Enneanectes pectoralis (Fowler, 1941) -- valid -- redeye triplefin, tres aletas aletón
  Enneanectes reticulatus Allen and Robertson, 1991 -- valid -- flag triplefin, tres aletas bandera
  Enophrys bison (Girard, 1854) -- valid -- buffalo sculpin
  Enophrys diceraus (Pallas, 1787) -- valid -- antlered sculpin
  Enophrys lucasi (Jordan and Gilbert in Jordan and Evermann, 1898) -- valid -- leister sculpin
  Enophrys taurina Gilbert, 1914 -- valid -- bull sculpin
  Entomacrodus chiostictus (Jordan and Gilbert, 1882) -- valid -- borracho aleta mocha, notchfin blenny
  Entomacrodus nigricans Gill, 1859 -- valid -- blenio perlado, borracho perlado, pearl blenny
  Enypnias seminudus (Günther, 1861) -- valid -- gobio cienoso, silt goby
  Eopsetta jordani (Lockington, 1879) -- valid -- petrale sole, Petrale Sole, platija petrale, plie de Californie
  Ephippidae -- valid -- chèvres de mer, peluqueros, spadefishes
  Epinephelus acanthistius (Gilbert, 1892) -- valid -- baqueta, Gulf coney, rooster hind
  Epinephelus adscensionis (Osbeck, 1765) -- valid -- cabra mora, cabrilla payaso, rock hind
  Epinephelus analogus Gill, 1863 -- valid -- cabrilla pinta, spotted cabrilla
  Epinephelus cifuentesi Lavenberg and Grove in Heemstra and Randall, 1993 -- valid -- cabrilla gallina, olive grouper
  Epinephelus drummondhayi Goode and Bean, 1878 -- valid -- mero pintarroja, speckled hind
  Epinephelus exsul (Fowler, 1944) -- valid -- cabrilla diez espinas, tenspine grouper
  Epinephelus flavolimbatus Poey, 1865 -- valid -- mero de aletas amarillas, mero extraviado, yellowedge grouper
  Epinephelus guttatus (Linnaeus, 1758) -- valid -- cabrilla, cabrilla colorada, red hind
  Epinephelus itajara (Lichtenstein, 1822) -- valid -- goliath grouper, guasa, jewfish, mero guasa
  Epinephelus labriformis (Jenyns, 1840) -- valid -- cabrilla piedrera, flag cabrilla, lateralband grouper, starry grouper
  Epinephelus morio (Valenciennes in Cuvier and Valenciennes, 1828) -- valid -- cherna americana, red grouper
  Epinephelus mystacinus (Poey, 1852) -- valid -- cherno de lo alto, convict grouper, misty grouper, moustache grouper
  Epinephelus nigritus (Holbrook, 1855) -- valid -- cherno prieto, mero negro, warsaw grouper
  Epinephelus niphobles Gilbert and Starks in Gilbert, 1897 -- valid -- baqueta ploma, star-studded grouper, star-studed grouper
  Epinephelus niveatus (Valenciennes in Cuvier and Valenciennes, 1828) -- valid -- cherna manchada, cherna pintada, snowy grouper
  Epinephelus striatus (Bloch, 1792) -- valid -- cherna criolla, mero del Caribe, Nassau grouper
  Epinnula magistralis Poey, 1854 -- valid -- domine, dómine, dominó
  Eptatretus deani (Evermann and Goldsborough, 1907) -- valid -- black hagfish, bruja pecosa
  Eptatretus fritzi Wisner and McMillan, 1990 -- valid -- bruja de Guadalupe, Guadalupe hagfish
  Eptatretus mcconnaugheyi Wisner and McMillan, 1990 -- valid -- bruja cabeza chica, shorthead hagfish
  Eptatretus sinus Wisner and McMillan, 1990 -- valid -- bruja de Cortés, Cortez hagfish
  Eptatretus stoutii (Lockington, 1878) -- valid -- bruja pintada, Pacific hagfish
  Equetus lanceolatus (Linnaeus, 1758) -- valid -- jackknife fish, jackknife-fish, payasito obispo, vaqueta de cinta
  Equetus punctatus (Bloch and Schneider, 1801) -- valid -- payasito punteado, spotted drum, vaqueta punteada
  Eremichthys acros Hubbs and Miller, 1948 -- valid -- desert dace
  Erilepis zonifer (Lockington, 1880) -- valid -- skilfish
  Erimonax monachus (Cope, 1868) -- valid -- spotfin chub
  Erimystax cahni (Hubbs and Crowe, 1956) -- valid -- slender chub
  Erimystax dissimilis (Kirtland, 1840) -- valid -- streamline chub
  Erimystax harryi (Hubbs and Crowe, 1956) -- valid -- Ozark chub
  Erimystax insignis (Hubbs and Crowe, 1956) -- valid -- blotched chub
  Erimystax x-punctatus (Hubbs and Crowe, 1956) -- valid -- gravel chub
  Erimyzon oblongus (Mitchill, 1814) -- valid -- creek chubsucker
  Erimyzon sucetta (Lacepède, 1803) -- valid -- lake chubsucker
  Erimyzon tenuis (Agassiz, 1855) -- valid -- sharpfin chubsucker
  Ernogrammus walkeri Follett and Powell, 1988 -- valid -- masked prickleback
  Erotelis armiger (Jordan and Richardson in Jordan, 1895) -- valid -- flathead sleeper, guavina cabeza plana
  Erotelis smaragdus (Valenciennes in Cuvier and Valenciennes, 1837) -- valid -- emerald sleeper, guavina de concha
  Erythrocles monodi Poll and Cadenat, 1954 -- valid -- crimson rover
  Esocidae -- valid -- brochets, lucios, pickerels, pikes
  Esox americanus Gmelin, 1789 -- valid -- brochet d'Amérique, brochet d'Amérique (vermiculé), grass pickerel, redfin or grass pickerel, redfin pickerel
  Esox lucius Linnaeus, 1758 -- valid -- grand brochet, northern pike
  Esox masquinongy Mitchill, 1824 -- valid -- maskinongé, muskellunge
  Esox niger Lesueur, 1818 -- valid -- brochet maillé, chain pickerel
  Esselenichthys carli (Follett and Anderson, 1990) -- valid -- abrojo tres rayas, threeline prickleback
  Esselenichthys laurae (Follett and Anderson, 1990) -- valid -- abrojo dos rayas, twoline prickleback
  Etelis oculatus (Valenciennes in Cuvier and Valenciennes, 1828) -- valid -- cachucho, pargo cachucho, queen snapper
  Ethadophis akkistikos McCosker and Böhlke, 1984 -- valid -- indifferent eel
  Ethadophis byrnei Rosenblatt and McCosker, 1970 -- valid -- ordinary eel, tieso de Cortés
  Ethadophis merenda Rosenblatt and McCosker, 1970 -- valid -- snack eel, tieso merienda
  Etheostoma acuticeps Bailey, 1959 -- valid -- sharphead darter
  Etheostoma aquali Williams and Etnier, 1978 -- valid -- coppercheek darter
  Etheostoma artesiae (Hay, 1881) -- valid -- redspot darter
  Etheostoma asprigene (Forbes in Jordan, 1878) -- valid -- mud darter
  Etheostoma australe Jordan, 1889 -- valid -- Conchos darter, perca del Conchos
  Etheostoma baileyi Page and Burr, 1982 -- valid -- emerald darter
  Etheostoma barbouri Kuehne and Small, 1971 -- valid -- teardrop darter
  Etheostoma barrenense Burr and Page in Page and Burr, 1982 -- valid -- splendid darter
  Etheostoma bellator Suttkus and Bailey, 1993 -- valid -- Warrior darter
  Etheostoma bellum Zorach, 1968 -- valid -- orangefin darter
  Etheostoma bison Ceas and Page, 1997 -- valid -- Buffalo darter
  Etheostoma blennioides Rafinesque, 1819 -- valid -- greenside darter
  Etheostoma blennius Gilbert and Swain in Gilbert, 1887 -- valid -- blenny darter
  Etheostoma boschungi Wall and Williams, 1974 -- valid -- slackwater darter
  Etheostoma brevirostrum Suttkus and Etnier, 1991 -- valid -- holiday darter
  Etheostoma burri Ceas and Page, 1997 -- valid -- brook darter
  Etheostoma caeruleum Storer, 1845 -- valid -- dard arc-en-ciel, rainbow darter
  Etheostoma camurum (Cope, 1870) -- valid -- bluebreast darter
  Etheostoma chermocki Boschung, Mayden and Tomelleri, 1992 -- valid -- vermilion darter
  Etheostoma chienense Page and Ceas in Page, Ceas, Swofford and Buth, 1992 -- valid -- relict darter
  Etheostoma chlorobranchium Zorach, 1972 -- valid -- greenfin darter
  Etheostoma chlorosoma (Hay, 1881) -- invalid
  Etheostoma chuckwachatte Mayden and Wood in Wood and Mayden, 1993 -- valid -- lipstick darter
  Etheostoma cinereum Storer, 1845 -- valid -- ashy darter
  Etheostoma collettei Birdsong and Knapp, 1969 -- valid -- creole darter
  Etheostoma collis (Hubbs and Cannon, 1935) -- valid -- Carolina darter, saluda darter
  Etheostoma colorosum Suttkus and Bailey, 1993 -- valid -- coastal darter
  Etheostoma coosae (Fowler, 1945) -- valid -- Coosa darter
  Etheostoma corona Page and Ceas in Page, Ceas, Swofford and Buth, 1992 -- valid -- crown darter
  Etheostoma cragini Gilbert, 1885 -- valid -- Arkansas darter
  Etheostoma crossopterum Braasch and Mayden, 1985 -- valid -- fringed darter
  Etheostoma davisoni Hay, 1885 -- valid -- Choctawhatchee darter
  Etheostoma denoncourti Stauffer and van Snik, 1997 -- valid -- golden darter
  Etheostoma ditrema Ramsey and Suttkus, 1965 -- valid -- coldwater darter
  Etheostoma douglasi Wood and Mayden, 1993 -- valid -- Tuskaloosa darter, Tuskalusa darter
  Etheostoma duryi Henshall, 1889 -- valid -- black darter, blackside darter, blackside snubnose darter
  Etheostoma edwini (Hubbs and Cannon, 1935) -- valid -- brown darter
  Etheostoma etnieri Bouchard, 1977 -- valid -- cherry darter
  Etheostoma etowahae Wood and Mayden, 1993 -- valid -- Etowah darter
  Etheostoma euzonum (Hubbs and Black, 1940) -- valid -- Arkansas saddled darter
  Etheostoma exile (Girard, 1859) -- valid -- dard à ventre jaune, Iowa darter
  Etheostoma flabellare Rafinesque, 1819 -- valid -- dard barré, fantail darter
  Etheostoma flavum Etnier and Bailey, 1989 -- valid -- saffron darter
  Etheostoma fonticola (Jordan and Gilbert, 1886) -- valid -- fountain darter
  Etheostoma forbesi Page and Ceas in Page, Ceas, Swofford and Buth, 1992 -- valid -- Barrens darter
  Etheostoma fragi Distler, 1968 -- valid -- Strawberry darter
  Etheostoma fricksium Hildebrand, 1923 -- valid -- Savannah darter
  Etheostoma fusiforme (Girard, 1854) -- valid -- swamp darter
  Etheostoma gracile (Girard, 1859) -- valid -- slough darter
  Etheostoma grahami (Girard, 1859) -- valid -- perca del Bravo, Rio Grande darter
  Etheostoma histrio Jordan and Gilbert in Gilbert, 1887 -- valid -- harlequin darter
  Etheostoma hopkinsi (Fowler, 1945) -- valid -- Christmas darter
  Etheostoma inscriptum (Jordan and Brayton, 1878) -- valid -- turquoise darter
  Etheostoma jessiae (Jordan and Brayton in Jordan, 1878) -- valid -- blueside darter
  Etheostoma jordani Gilbert, 1891 -- valid -- greenbreast darter
  Etheostoma juliae Meek, 1891 -- valid -- yoke darter
  Etheostoma kanawhae (Raney, 1941) -- valid -- Kanawha darter
  Etheostoma kantuckeense Ceas and Page, 1997 -- valid -- Highland Rim darter
  Etheostoma kennicotti (Putnam, 1863) -- valid -- stripetail darter
  Etheostoma lachneri Suttkus and Bailey in Suttkus, Bailey and Bart, 1994 -- valid -- Tombigbee darter
  Etheostoma lawrencei Ceas and Burr, 2002 -- valid -- headwater darter
  Etheostoma lepidum (Baird and Girard, 1853) -- valid -- greenthroat darter
  Etheostoma longimanum Jordan, 1888 -- valid -- longfin darter
  Etheostoma lugoi Norris and Minckley, 1997 -- valid -- perca de toba, tufa darter
  Etheostoma luteovinctum Gilbert and Swain in Gilbert, 1887 -- valid -- redband darter
  Etheostoma lynceum Hay in Jordan, 1885 -- valid -- brighteye darter
  Etheostoma maculatum Kirtland, 1840 -- valid -- spotted darter
  Etheostoma mariae (Fowler, 1947) -- valid -- pinewoods darter
  Etheostoma microlepidum Raney and Zorach, 1967 -- valid -- smallscale darter
  Etheostoma microperca Jordan and Gilbert in Jordan, 1888 -- valid -- least darter
  Etheostoma moorei Raney and Suttkus, 1964 -- valid -- yellowcheek darter
  Etheostoma neopterum Howell and Dingerkus, 1978 -- valid -- lollipop darter, lollypop darter
  Etheostoma nianguae Gilbert and Meek in Gilbert, 1887 -- valid -- Niangua darter
  Etheostoma nigripinne Braasch and Mayden, 1985 -- valid -- blackfin darter
  Etheostoma nigrum Rafinesque, 1820 -- valid -- johnny darter, raseux-de-terre noir
  Etheostoma nuchale Howell and Caldwell, 1965 -- valid -- watercress darter
  Etheostoma obeyense Kirsch, 1892 -- valid -- barcheek darter
  Etheostoma okaloosae (Fowler, 1941) -- valid -- Okaloosa darter
  Etheostoma olivaceum Braasch and Page, 1979 -- valid -- dirty darter, sooty darter
  Etheostoma olmstedi Storer, 1842 -- valid -- raseux-de-terre gris, tessellated darter
  Etheostoma oophylax Ceas and Page in Page, Ceas, Swofford and Buth, 1992 -- valid -- guardian darter
  Etheostoma osburni (Hubbs and Trautman, 1932) -- valid -- candy darter, finescale saddled darter
  Etheostoma pallididorsum Distler and Metcalf, 1962 -- valid -- paleback darter
  Etheostoma parvipinne Gilbert and Swain in Gilbert, 1887 -- valid -- goldstripe darter
  Etheostoma percnurum Jenkins in Jenkins and Burkhead, 1994 -- valid -- duskytail darter
  Etheostoma perlongum (Hubbs and Raney, 1946) -- valid -- Waccamaw darter
  Etheostoma phytophilum Bart and Taylor, 1999 -- valid -- rush darter
  Etheostoma podostemone Jordan and Jenkins in Jordan, 1889 -- valid -- riverweed darter
  Etheostoma pottsii (Girard, 1859) -- valid -- Mexican darter, perca mexicana
  Etheostoma proeliare (Hay, 1881) -- valid -- cypress darter
  Etheostoma pseudovulatum Page and Ceas in Page, Ceas, Swofford and Buth, 1992 -- valid -- egg-mimic darter
  Etheostoma punctulatum (Agassiz, 1854) -- valid -- stippled darter
  Etheostoma pyrrhogaster Bailey and Etnier, 1988 -- valid -- firebelly darter
  Etheostoma radiosum (Hubbs and Black, 1941) -- valid -- orangebelly darter
  Etheostoma rafinesquei Burr and Page in Page and Burr, 1982 -- valid -- Kentucky darter, Kentucky snubnose darter
  Etheostoma ramseyi Suttkus and Bailey in Suttkus, Bailey and Bart, 1994 -- valid -- Alabama darter
  Etheostoma raneyi Suttkus and Bart in Suttkus, Bailey and Bart, 1994 -- valid -- Yazoo darter
  Etheostoma rubrum Raney and Suttkus, 1966 -- valid -- bayou darter
  Etheostoma rufilineatum (Cope, 1870) -- valid -- redline darter
  Etheostoma rupestre Gilbert and Swain in Gilbert, 1887 -- valid -- rock darter
  Etheostoma sagitta (Jordan and Swain, 1883) -- valid -- arrow darter
  Etheostoma sanguifluum (Cope, 1870) -- valid -- bloodfin darter
  Etheostoma scotti Bauer, Etnier and Burkhead, 1995 -- valid -- Cherokee darter
  Etheostoma segrex Norris and Minckley, 1997 -- valid -- perca del Salado, Salado darter
  Etheostoma sellare (Radcliffe and Welsh, 1913) -- valid -- Maryland darter
  Etheostoma serrifer (Hubbs and Cannon, 1935) -- valid -- sawcheek darter
  Etheostoma simoterum (Cope, 1868) -- valid -- snubnose darter, Tennessee snubnose darter
  Etheostoma smithi Page and Braasch, 1976 -- valid -- slabrock darter
  Etheostoma spectabile (Agassiz, 1854) -- valid -- orangethroat darter
  Etheostoma squamiceps Jordan, 1877 -- valid -- spottail darter
  Etheostoma stigmaeum (Jordan, 1877) -- valid -- speckled darter
  Etheostoma striatulum Page and Braasch, 1977 -- valid -- striated darter
  Etheostoma swaini (Jordan, 1884) -- valid -- Gulf darter
  Etheostoma swannanoa Jordan and Evermann in Jordan, 1889 -- valid -- Swannanoa darter
  Etheostoma tallapoosae Suttkus and Etnier, 1991 -- valid -- Tallapoosa darter
  Etheostoma tecumsehi Ceas and Page, 1997 -- valid -- Shawnee darter
  Etheostoma tetrazonum (Hubbs and Black, 1940) -- valid -- Missouri saddled darter
  Etheostoma thalassinum (Jordan and Brayton, 1878) -- valid -- seagreen darter
  Etheostoma tippecanoe Jordan and Evermann, 1890 -- valid -- Tippecanoe darter
  Etheostoma trisella Bailey and Richards, 1963 -- valid -- trispot darter
  Etheostoma tuscumbia Gilbert and Swain in Gilbert, 1887 -- valid -- Tuscumbia darter
  Etheostoma uniporum Distler, 1968 -- valid -- current darter
  Etheostoma variatum Kirtland, 1840 -- valid -- variegate darter
  Etheostoma virgatum (Jordan, 1880) -- valid -- striped darter
  Etheostoma vitreum (Cope, 1870) -- valid -- glassy darter
  Etheostoma vulneratum (Cope, 1870) -- valid -- wounded darter
  Etheostoma wapiti Etnier and Williams, 1989 -- valid -- boulder darter, Elk River darter
  Etheostoma whipplei (Girard, 1859) -- valid -- redfin darter
  Etheostoma zonale (Cope, 1868) -- valid -- banded darter
  Etheostoma zonifer (Hubbs and Cannon, 1935) -- valid -- backwater darter
  Etheostoma zonistium Bailey and Etnier, 1988 -- valid -- bandfin darter
  Etmopteridae Fowler, 1934 -- valid -- lantern sharks, requins-lanternes, tiburones luceros
  Etmopterus bigelowi Shirai and Tachikawa, 1993 -- valid -- blurred lantern shark, blurred smooth lantern shark
  Etmopterus gracilispinis Krefft, 1968 -- valid -- broadband dogfish, broadband lantern shark, broadbanded lanternshark
  Etropus crossotus Jordan & Gilbert, 1882 -- valid -- fringed flounder, Fringed Flounder, lenguado orlado, lenguado ribete
  Etropus cyclosquamus Leslie & Stewart, 1986 -- valid -- shelf flounder, Shelf Flounder
  Etropus microstomus (Gill, 1864) -- valid -- smallmouth flounder, Smallmouth Flounder
  Etropus peruvianus Hildebrand, 1946 -- valid -- lenguado zapatilla, Peruvian flounder, Peruvian Flounder
  Etropus rimosus Goode & Bean, 1885 -- valid -- gray flounder, Gray Flounder, lenguado sombreado
  Etrumeus teres (DeKay, 1842) -- valid -- Atlantic red herring, Maray, red-eye round herring, round herring, sardina canalera, sardina japonesa
  Eucinostomus argenteus Baird and Girard in Baird, 1855 -- valid -- mojarra plateada, spotfin mojarra
  Eucinostomus currani Zahuranec in Yáñez-Arancibia, 1980 -- valid -- mojarra tricolor, Pacific flagfin mojarra
  Eucinostomus dowii (Gill, 1863) -- valid -- mojarra manchita, Pacific spotfin mojarra
  Eucinostomus entomelas Zahuranec in Yáñez-Arancibia, 1980 -- valid -- darkspot mojarra, mojarra mancha negra
  Eucinostomus gracilis (Gill, 1862) -- valid -- graceful mojarra, mojarra charrita
  Eucinostomus gula (Quoy and Gaimard, 1824) -- valid -- mojarra de ley, mojarra española, silver jenny
  Eucinostomus harengulus Goode and Bean, 1879 -- valid -- mojarra costera, tidewater mojarra
  Eucinostomus havana (Nichols, 1912) -- valid -- bigeye mojarra, mojarra cubana, mojarrita manchada
  Eucinostomus jonesii (Günther, 1879) -- valid -- mojarra flaca, mojarrita esbelta, slender mojarra
  Eucinostomus lefroyi (Goode, 1874) -- valid -- mojarra pinta, mojarrita, mottled mojarra
  Eucinostomus melanopterus (Bleeker, 1863) -- valid -- flagfin mojarra, mojarra bandera, mojarra de ley
  Eucryphycus californicus (Starks and Mann, 1911) -- valid -- persimmon eelpout
  Eucyclogobius newberryi (Girard, 1856) -- valid -- tidewater goby
  Eugerres axillaris (Günther, 1864) -- valid -- black axillary mojarra, mojarra malacapa
  Eugerres brasilianus (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- Brazilian mojarra, mojarra brasileña, patao brasileño
  Eugerres brevimanus (Günther, 1864) -- valid -- mojarra aleta corta, shortfin mojarra
  Eugerres lineatus (Humboldt in Humboldt and Valenciennes, 1821) -- valid -- mojarra china, streaked mojarra
  Eugerres mexicanus (Steindachner, 1863) -- valid -- Mexican mojarra, mojarra mexicana
  Eugerres plumieri (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- mojarra rayada, patao rayado, striped mojarra
  Euleptorhamphus velox Poey, 1868 -- valid -- agujeta voladora, escribano volador, flying halfbeak
  Euleptorhamphus viridis (van Hasselt, 1823) -- valid -- agujeta alargada, longbeaked garfish, ribbon halfbeak
  Eumecichthys fiski (Günther, 1890) -- valid -- unicorn crestfish, unicornfish
  Eumesogrammus praecisus (Krøyer, 1836) -- valid -- fourline snakeblenny, quatre-lignes atlantique
  Eumicrotremus andriashevi Perminov, 1936 -- valid -- pimpled lumpsucker
  Eumicrotremus asperrimus (Tanaka, 1912) -- valid -- Siberian lumpsucker
  Eumicrotremus barbatus (Lindberg and Legeza, 1955) -- valid -- papillose lumpsucker
  Eumicrotremus derjugini Popov, 1926 -- valid -- leatherfin lumpsucker, petite poule de mer Arctique
  Eumicrotremus eggvinii Koefoed, 1956 -- valid -- Eggvin lumpsucker
  Eumicrotremus gyrinops (Garman, 1892) -- valid -- Alaskan lumpsucker
  Eumicrotremus orbis (Günther, 1861) -- valid -- Pacific spiny lumpsucker
  Eumicrotremus phrynoides Gilbert and Burke, 1912 -- valid -- toad lumpsucker
  Eumicrotremus spinosus (Fabricius in Müller, 1776) -- valid -- Atlantic spiny lumpsucker, petite poule de mer atlantique
  Eumicrotremus terraenovae Myers and Böhlke, 1950 -- valid -- Newfoundland spiny lumpsucker
  Euprotomicrus bispinatus (Quoy and Gaimard, 1824) -- valid -- pygmy shark, tiburón pigmeo
  Eurymen gyrinus Gilbert and Burke, 1912 -- valid -- smoothcheek sculpin
  Euthynnus affinis (Cantor, 1849) -- valid -- bacoreta oriental, kawakawa, thonine orientale
  Euthynnus alletteratus (Rafinesque, 1810) -- valid -- bacoreta, comevíveres, false albacore, little tuna, little tunny, thonine commune
  Euthynnus lineatus Kishinouye, 1920 -- valid -- barrilete negro, black skipjack, thonine noire
  Evarra bustamantei Navarro, 1955 -- valid -- carpa xochimilca, Mexican chub
  Evarra eigenmanni Woolman, 1894 -- valid -- carpa verde, plateau chub
  Evarra tlahuacensis Meek, 1902 -- valid -- carpa de Tláhuac, endorheic chub
  Evermannia longipinnis (Steindachner, 1879) -- valid -- enigmatic goby, gobio enigmático
  Evermannia zosterura (Jordan and Gilbert, 1882) -- valid -- bandedtail goby, gobio colirrayada
  Evermannichthys spongicola (Radcliffe, 1917) -- valid -- gobio esponjero, sponge goby
  Evorthodus lyricus (Girard, 1858) -- valid -- gobio lira, lyre goby, tismiche
  Evorthodus minutus Meek and Hildebrand, 1928 -- valid -- gobio pequeño, small goby
  Evoxymetopon taeniatus Gill, 1863 -- valid -- channel scabbardfish, tirante, tyrant fish
  Exerpes asper (Jenkins and Evermann, 1889) -- valid -- sargassum blenny, trambollo sargacero
  Exocoetidae -- valid -- exocets, flyingfishes, voladores
  Exocoetus monocirrhus Richardson, 1846 -- valid -- barbel flyingfish, volador barbudo
  Exocoetus obtusirostris Günther, 1866 -- valid -- oceanic two-wing flyingfish, volador flecha, volador oceánico
  Exocoetus volitans Linnaeus, 1758 -- valid -- tropical two-wing flyingfish, volador tropical
  Exoglossum laurae (Hubbs, 1931) -- valid -- tonguetied minnow
  Exoglossum maxillingua (Lesueur, 1817) -- valid -- bec-de-lièvre, cutlip minnow, cutlips minnow
  Facciolella equatorialis (Gilbert, 1891) -- valid -- dogface witch eel, serpentina bruja
  Fenestraja sinusmexicanus (Bigelow and Schroeder, 1950) -- valid -- Gulf of Mexico pygmy skate, Gulf skate, raya pigmea
  Fistularia commersonii Rüppell, 1838 -- valid -- corneta pintada, reef cornetfish
  Fistularia corneta Gilbert and Starks, 1904 -- valid -- corneta flautera, deepwater cornetfish
  Fistularia petimba Lacepède, 1803 -- valid -- corneta colorada, Pacific cornetfish, red cornetfish, smooth flutemouth, trompetero
  Fistularia tabacaria Linnaeus, 1758 -- valid -- bluespotted cornetfish, corneta azul, pez corneta, tobacco trumpetfish
  Fistulariidae -- valid -- cornetas, cornetfishes, fistulaires
  Floridichthys carpio (Günther, 1866) -- valid -- goldspotted killifish, ocellated killifish
  Floridichthys polyommus Hubbs, 1936 -- valid -- bolín yucateco, ocellated killifish
  Fodiator acutus (Valenciennes in Cuvier and Valenciennes, 1847) -- valid -- sharpchin flyingfish, volador picudo
  Foetorepus agassizii (Goode and Bean in Agassiz, 1888) -- valid -- spotfin dragonet
  Foetorepus goodenbeani Nakabo and Hartel, 1999 -- valid -- palefin dragonet
  Forbesichthys agassizii (Putnam, 1872) -- valid -- spring cavefish
  Forcipiger flavissimus Jordan and McGregor in Jordan and Evermann, 1898 -- valid -- forcepsfish, longnose butterflyfish, mariposa hocicona
  Fundulidae Jordan and Gilbert, 1882 -- valid -- fondules, fundulines, killifishes, sardinillas, topminnows
  Fundulus albolineatus Gilbert, 1891 -- valid -- whiteline topminnow
  Fundulus bifax Cashner and Rogers in Cashner, Rogers and Grady, 1988 -- valid -- stippled studfish
  Fundulus blairae Wiley and Hall, 1975 -- valid -- southern starhead topminnow, western starhead topminnow
  Fundulus catenatus (Storer, 1846) -- valid -- northern studfish
  Fundulus chrysotus (Günther, 1866) -- valid -- golden topminnow
  Fundulus cingulatus Valenciennes in Cuvier and Valenciennes, 1846 -- valid -- banded topminnow
  Fundulus confluentus Goode and Bean in Goode, 1879 -- valid -- marsh killifish
  Fundulus diaphanus (Lesueur, 1817) -- valid -- banded killifish, fondule barré
  Fundulus dispar (Agassiz, 1854) -- valid -- northern starhead topminnow, starhead topminnow
  Fundulus escambiae (Bollman, 1887) -- valid -- russetfin topminnow
  Fundulus euryzonus Suttkus and Cashner, 1981 -- valid -- broadstripe topminnow
  Fundulus grandis Baird and Girard, 1853 -- valid -- Gulf killifish, sardinilla del Pánuco
  Fundulus grandissimus Hubbs, 1936 -- valid -- giant killifish, sardinilla gigante
  Fundulus heteroclitus (Linnaeus, 1766) -- valid -- choquemort, mummichog
  Fundulus jenkinsi (Evermann, 1892) -- valid -- saltmarsh topminnow, sardinilla del Bravo
  Fundulus julisia Williams and Etnier, 1982 -- valid -- Barrens topminnow
  Fundulus kansae Garman, 1895 -- valid -- northern plains killifish
  Fundulus lima Vaillant, 1894 -- valid -- Baja California killifish, sardinilla peninsular
  Fundulus lineolatus (Agassiz, 1854) -- valid -- lined topminnow
  Fundulus luciae (Baird, 1855) -- valid -- spotfin killifish
  Fundulus majalis (Walbaum, 1792) -- valid -- striped killifish
  Fundulus notatus (Rafinesque, 1820) -- valid -- blackstripe topminnow
  Fundulus nottii (Agassiz, 1854) -- invalid -- bayou topminnow, Gulf starhead topminnow, starhead topminnow
  Fundulus olivaceus (Storer, 1845) -- valid -- blackspotted topminnow
  Fundulus parvipinnis Girard, 1854 -- valid -- California killifish, sardinilla chococo
  Fundulus persimilis Miller, 1955 -- valid -- sardinilla yucateca, Yucatan killifish
  Fundulus pulvereus (Evermann, 1892) -- valid -- bayou killifish, sardinilla mulata
  Fundulus rathbuni Jordan and Meek in Jordan, 1889 -- valid -- speckled killifish
  Fundulus rubrifrons (Jordan, 1880) -- invalid -- redface topminnow
  Fundulus sciadicus Cope, 1865 -- valid -- plains topminnow
  Fundulus seminolis Girard, 1859 -- valid -- Seminole killifish
  Fundulus similis (Baird and Girard, 1853) -- valid -- longnose killifish, sardinilla narigona
  Fundulus stellifer (Jordan, 1877) -- invalid -- southern studfish
  Fundulus waccamensis Hubbs and Raney, 1946 -- valid -- Waccamaw killifish
  Fundulus zebrinus Jordan and Gilbert, 1883 -- valid -- plains killifish
  Gadidae Rafinesque, 1810 -- valid -- bacalaos, codfishes, cods, morues, true cods
  Gadiformes -- valid -- cods, gadiforms, grenadiers, hakes, merlus, morues
  Gadus macrocephalus Tilesius, 1810 -- valid -- bacalao del Pacifico, morue du Pacifique, Pacific cod
  Gadus morhua Linnaeus, 1758 -- valid -- Atlantic cod, bacalao del Atlántico, cod, morue de l'Atlantique, morue franche, rock cod
  Gadus ogac Richardson, 1836 -- valid -- bacalao de Groenlandia, Greenland cod, morue ogac, ogac, ogac
  Galeichthys peruvianus Lütken, 1874 -- valid -- bagre de faja, Peruvian sea catfish
  Galeocerdo cuvier (Péron and Lesueur in Lesueur, 1822) -- valid -- tiburón tigre, tiger shark, tintorera
  Galeorhinus galeus (Linnaeus, 1758) -- valid -- tiburón aceitoso, tope, tope shark
  Galeus arae (Nichols, 1927) -- valid -- gatica manchada, marbled cat shark, marbled catshark, roughtail cat shark, roughtail catshark
  Gambusia affinis (Baird and Girard, 1853) -- valid -- guayacón mosquito, mosquitofish, western mosquitofish
  Gambusia alvarezi Hubbs and Springer, 1957 -- valid -- guayacón de San Gregorio, yellowfin gambusia
  Gambusia amistadensis Peden, 1973 -- valid -- Amistad gambusia
  Gambusia atrora Rosen and Bailey, 1963 -- valid -- blackfin gambusia, guayacón de San Luis
  Gambusia aurata Miller and Minckley, 1970 -- valid -- golden gambusia, guayacón dorado
  Gambusia eurystoma Miller, 1975 -- valid -- guayacón del Azufre, widemouth gambusia
  Gambusia gaigei Hubbs, 1929 -- valid -- Big Bend gambusia
  Gambusia geiseri Hubbs and Hubbs in Hubbs and Springer, 1957 -- valid -- largespring gambusia
  Gambusia georgei Hubbs and Peden, 1969 -- valid -- San Marcos gambusia
  Gambusia heterochir Hubbs, 1957 -- valid -- Clear Creek gambusia
  Gambusia holbrooki Girard, 1859 -- invalid -- eastern mosquitofish
  Gambusia hurtadoi Hubbs and Springer, 1957 -- valid -- crescent gambusia, guayacón de Hacienda de Dolores
  Gambusia krumholzi Minckley, 1963 -- valid -- guayacón del Nava, spotfin gambusia
  Gambusia longispinis Minckley, 1962 -- valid -- Cuatro Cienegas gambusia, guayacón de Cuatro Ciénegas
  Gambusia marshi Minckley and Craddock in Minckley, 1962 -- valid -- guayacón de Nadadores, robust gambusia
  Gambusia nobilis (Baird and Girard, 1853) -- valid -- Pecos gambusia
  Gambusia panuco Hubbs, 1926 -- valid -- guayacón del Pánuco, Panuco gambusia
  Gambusia regani Hubbs, 1926 -- valid -- Forlon gambusia, guayacón del Forlón
  Gambusia rhizophorae Rivas, 1969 -- valid -- mangrove gambusia
  Gambusia senilis Girard, 1859 -- valid -- blotched gambusia, guayacón del Bravo
  Gambusia sexradiata Hubbs, 1936 -- valid -- guayacón del sureste, stippled gambusia
  Gambusia speciosa Girard, 1859 -- valid -- guayacón de Nuevo León, southwestern mosquitofish, Tex-Mex gambusia
  Gambusia vittata Hubbs, 1926 -- valid -- guayacón de Victoria, Gulf gambusia
  Gambusia yucatana Regan, 1914 -- valid -- guayacón yucateco, Yucatan gambusia, yucatan gambusia
  Gasterosteidae -- valid -- épinoches, espinochos, sticklebacks
  Gasterosteus aculeatus Linnaeus, 1758 -- valid -- Alaskan stickleback, épinoche à trois épines, espinocho, threespine stickleback
  Gasterosteus wheatlandi Putnam, 1867 -- valid -- blackspotted stickleback, épinoche tachetée
  Gastropsetta frontalis Bean, 1895 -- valid -- lenguado gambero, Shrimp Flounder, shrimp flounder
  Gempylidae -- valid -- escolares, escolars, snake mackerels
  Gempylus serpens Cuvier, 1829 -- valid -- dómine añil, escolar de canal, snake mackerel
  Genyonemus lineatus (Ayres, 1855) -- valid -- corvineta blanca, white croaker
  Geophagus surinamensis (Bloch, 1791) -- valid -- redstriped eartheater
  Gephyroberyx darwinii (Johnson, 1866) -- valid -- big roughie, big roughy, carajuelo de fondo
  Gerreidae -- valid -- blanches, mojarras, mojarras
  Gerres cinereus (Walbaum, 1792) -- valid -- mojarra blanca, mojarra trompetera, yellowfin mojarra
  Gibbonsia elegans (Cooper, 1864) -- valid -- sargacero manchado, spotted kelpfish
  Gibbonsia metzi Hubbs, 1927 -- valid -- sargacero rayado, striped kelpfish
  Gibbonsia montereyensis Hubbs, 1927 -- valid -- crevice kelpfish, sargacero de Monterey, scarlet kelpfish
  Gila alvordensis Hubbs and Miller, 1972 -- invalid -- Alvord chub
  Gila atraria (Girard, 1856) -- valid -- Utah chub
  Gila bicolor (Girard, 1856) -- invalid -- tui chub
  Gila boraxobius Williams and Bond, 1980 -- invalid -- Borax Lake chub
  Gila brevicauda Norris, Fischer and Minckley, 2003 -- valid -- carpa colicorta, shorttail chub
  Gila coerulea (Girard, 1856) -- valid -- blue chub
  Gila conspersa Garman, 1881 -- valid -- carpa Mayrán, Nazas chub
  Gila crassicauda (Baird and Girard in Girard, 1854) -- valid -- thicktail chub
  Gila cypha Miller, 1946 -- valid -- humpback chub
  Gila ditaenia Miller, 1945 -- valid -- carpa sonorense, Sonora chub
  Gila elegans Baird and Girard, 1853 -- valid -- bonytail, bonytail chub, carpa elegante
  Gila eremica DeMarais, 1991 -- valid -- carpa del desierto, desert chub
  Gila intermedia (Girard, 1856) -- valid -- carpa del Gila, Gila chub
  Gila minacae Meek, 1902 -- valid -- carpa cola redonda mexicana, Mexican roundtail chub
  Gila modesta (Garman, 1881) -- valid -- carpa de Saltillo, Saltillo chub
  Gila nigra Cope in Cope and Yarrow, 1875 -- valid -- headwater chub
  Gila nigrescens (Girard, 1856) -- valid -- carpa de Chihuahua, Chihuahua chub
  Gila orcuttii (Eigenmann and Eigenmann, 1890) -- valid -- arroyo chub
  Gila pandora (Cope, 1872) -- valid -- Rio Grande chub
  Gila pulchra (Girard, 1856) -- valid -- carpa del Conchos, Conchos chub
  Gila purpurea (Girard, 1856) -- valid -- carpa púrpura, Yaqui chub
  Gila robusta Baird and Girard, 1853 -- valid -- roundtail chub
  Gila seminuda Cope and Yarrow, 1875 -- valid -- Virgin chub, Virgin River chub
  Gillellus arenicola Gilbert, 1890 -- valid -- miraestrellas fina, sandloving stargazer
  Gillellus greyae Kanazawa, 1952 -- valid -- arrow stargazer, miraestrellas flecha, mirón flecha
  Gillellus healae Dawson, 1982 -- valid -- masked stargazer
  Gillellus ornatus Gilbert, 1892 -- valid -- miraestrellas ornada, ornate stargazer
  Gillellus searcheri Dawson, 1977 -- valid -- miraestrellas rayada, Searcher stargazer
  Gillellus semicinctus Gilbert, 1890 -- valid -- halfbanded stargazer, miraestrellas mediafranjada
  Gillellus uranidea Böhlke, 1968 -- valid -- miraestrellas ojiverrugado, warteye stargazer
  Gillichthys mirabilis Cooper, 1864 -- valid -- chupalodo grande, longjaw mudsucker
  Gillichthys seta (Ginsburg, 1938) -- valid -- chupalodo chico, shortjaw mudsucker
  Ginglymostoma cirratum (Bonnaterre, 1788) -- valid -- nurse shark, tiburón gata
  Ginglymostomatidae Gill, 1862 -- valid -- gatas, nurse sharks, requins-nourrices
  Ginsburgellus novemlineatus (Fowler, 1950) -- valid -- gobio nueve rayas, ninelined goby, ninelined goby
  Girardinichthys multiradiatus (Meek, 1904) -- valid -- darkedged splitfin, mexcalpique de Zempoala
  Girardinichthys viviparus (Bustamante, 1837) -- valid -- Chapultepec splitfin, mexcalpique
  Girella nigricans (Ayres, 1860) -- valid -- chopa verde, opaleye
  Girella simplicidens Osburn and Nichols, 1916 -- valid -- chopa ojo azul, Gulf opaleye
  Glossanodon pygmaeus Cohen, 1958 -- valid -- pygmy argentine
  Glyptocephalus cynoglossus (Linnaeus, 1758) -- valid -- gray sole, plie grise, Witch Flounder, witch flounder
  Glyptocephalus zachirus Lockington, 1879 -- valid -- platija rey, plie royale, Rex Sole, rex sole
  Gnathagnus egregius (Jordan and Thompson, 1905) -- invalid -- freckled stargazer
  Gnathanodon speciosus (Forsskål, 1775) -- valid -- golden trevally, jurel dorado, mojarra dorada, yellow jack
  Gnatholepis thompsoni Jordan, 1904 -- valid -- gobio puntadorada, gobio puntidorado, goldspot goby
  Gnathophis bathytopos Smith and Kanazawa, 1977 -- valid -- blackgut conger
  Gnathophis bracheatopos Smith and Kanazawa, 1977 -- valid -- longeye conger
  Gnathophis cinctus (Garman, 1899) -- valid -- congrio cola tiesa, hardtail conger
  Gobiesocidae -- valid -- chupapiedras, clingfishes, crampons
  Gobiesox adustus Jordan and Gilbert, 1882 -- valid -- chupapiedra panámica, Panamic clingfish
  Gobiesox aethus (Briggs, 1951) -- valid -- chupapiedra de Clarión, Clarion clingfish
  Gobiesox barbatulus Starks, 1913 -- valid -- chupapiedra aristada, lappetlip clingfish
  Gobiesox canidens (Briggs, 1951) -- valid -- chupapiedra de Socorro, Socorro clingfish
  Gobiesox eugrammus Briggs, 1955 -- valid -- chupapiedra estriada, lined clingfish
  Gobiesox fluviatilis Briggs and Miller, 1960 -- valid -- cucharita de río, mountain clingfish
  Gobiesox juniperoserrai Espinosa Pérez and Castro-Aguirre, 1996 -- valid -- cucharita peninsular, peninsular clingfish
  Gobiesox maeandricus (Girard, 1858) -- valid -- chupapiedra norteña, northern clingfish
  Gobiesox marijeanae Briggs, 1960 -- valid -- chupapiedra solita, lonely clingfish
  Gobiesox mexicanus Briggs and Miller, 1960 -- valid -- cucharita mexicana, Mexican clingfish
  Gobiesox papillifer Gilbert, 1890 -- valid -- bearded clingfish, chupapiedra barbona
  Gobiesox pinniger Gilbert, 1890 -- valid -- chupapiedra renacuajo, tadpole clingfish
  Gobiesox punctulatus (Poey, 1876) -- valid -- chupapiedra punteada, pequita punteada, stippled clingfish
  Gobiesox rhessodon Smith, 1881 -- valid -- California clingfish, chupapiedra californiana
  Gobiesox schultzi Briggs, 1951 -- valid -- chupapiedra labioliso, smoothlip clingfish
  Gobiesox strumosus Cope, 1870 -- valid -- cazoleta, skilletfish
  Gobiidae -- valid -- gobies, gobies, gobios, true gobies
  Gobiomorus dormitor Lacepède, 1800 -- valid -- bigmouth sleeper, guavina bocón, guavina de ley
  Gobiomorus maculatus (Günther, 1859) -- valid -- dormilón manchado, Pacific sleeper
  Gobiomorus polylepis Ginsburg, 1953 -- valid -- finescale sleeper, guavina cristalina
  Gobionellus microdon (Gilbert, 1892) -- valid -- gobio cola de palma, palmtail goby
  Gobionellus oceanicus (Pallas, 1770) -- valid -- esmeralda de mar, highfin goby, madrejuile flecha, sharptail goby, slim goby
  Gobiosoma bosc (Lacepède, 1800) -- valid -- gobio desnudo, naked goby
  Gobiosoma chiquita (Jenkins and Evermann, 1889) -- valid -- gobio chiquito, Sonora goby
  Gobiosoma ginsburgi Hildebrand and Schroeder, 1928 -- valid -- seaboard goby
  Gobiosoma grosvenori (Robins, 1964) -- valid -- rockcut goby
  Gobiosoma longipala Ginsburg, 1933 -- valid -- twoscale goby
  Gobiosoma nudum (Meek and Hildebrand, 1928) -- valid -- gobio bulto, knobchin goby
  Gobiosoma paradoxum (Günther, 1861) -- valid -- gobio paradoja, paradox goby
  Gobiosoma robustum Ginsburg, 1933 -- valid -- code goby, gobio clave
  Gobiosoma yucatanum Dawson, 1971 -- valid -- gobio yucateco, Yucatan goby
  Gobulus crescentalis (Gilbert, 1892) -- valid -- crescent goby, gobio creciente
  Gobulus hancocki Ginsburg, 1938 -- valid -- gobio invertido, sandtop goby
  Gobulus myersi Ginsburg, 1939 -- valid -- paleback goby
  Gonioplectrus hispanus (Cuvier in Cuvier and Valenciennes, 1828) -- valid -- biajaiba de lo alto, cherna bandera, Spanish flag
  Goodea atripinnis Jordan, 1880 -- valid -- blackfin goodea, tiro
  Goodea gracilis Hubbs and Turner, 1939 -- valid -- dusky goodea, tiro oscuro
  Goodea luitpoldii (Steindachner, 1894) -- valid -- green goodea, tiro de Pátzcuaro
  Goodeidae Jordan, 1923 -- valid -- goodeid topminnows, goodéidés, goodeids, mexcalpiques, splitfins
  Gordiichthys ergodes McCosker, Böhlke and Böhlke, 1989 -- valid -- irksome eel, tieso fastidioso
  Gordiichthys irretitus Jordan and Davis, 1891 -- valid -- horsehair eel, tieso pelo de burro
  Gordiichthys leibyi McCosker and Böhlke, 1984 -- valid -- string eel, tieso bobo
  Gorgasia punctata Meek and Hildebrand, 1923 -- valid -- congrio punteado, peppered garden eel
  Gramma linki Starck and Colin, 1978 -- valid -- cabrilleta mejilla amarilla, linki, yellowcheek basslet, yellowlined basslet
  Gramma loreto Poey, 1868 -- valid -- fairy basslet, fairy basslet, loreto, royal gramma, royal gramma
  Gramma melacara Böhlke and Randall, 1963 -- valid -- blackcap basslet, blackcap basslet, cabrilleta violeta, gramma violeta
  Grammatidae -- valid -- basslets, cabrilletas, grammatidés
  Grammicolepis brachiusculus Poey, 1873 -- valid -- oropel, thorny tinselfish
  Grammonus claudei (de la Torre y Huerta, 1930) -- valid -- brótula parda, reef-cave brotula
  Grammonus diagrammus (Heller and Snodgrass, 1903) -- valid -- brótula púrpura, purple brotula
  Guavina guavina (Valenciennes in Cuvier and Valenciennes, 1837) -- valid -- Atlantic gauvina, guavina, guavina, guavina cabezona
  Gunterichthys longipenis Dawson, 1966 -- valid -- gold brotula
  Gymnachirus melas Nichols, 1916 -- valid -- naked sole, Naked Sole, suela desnuda
  Gymnachirus nudus Kaup, 1858 -- valid -- acedía nudosa, flabby sole, Flabby Sole, suela fofa
  Gymnachirus texae (Gunter, 1936) -- valid -- fringed sole, Fringed Sole, suela texana
  Gymnelus hemifasciatus Andriashev, 1937 -- valid -- halfbarred pout
  Gymnelus popovi (Taranetz and Andriashev, 1935) -- valid -- Aleutian pout
  Gymnelus retrodorsalis Le Danois, 1913 -- valid -- aurora pout
  Gymnelus viridis (Fabricius, 1780) -- valid -- fish doctor, unernak caméléon
  Gymnocanthus detrisus Gilbert and Burke, 1912 -- valid -- purplegray sculpin
  Gymnocanthus galeatus Bean, 1881 -- valid -- armorhead sculpin
  Gymnocanthus pistilliger (Pallas, 1814) -- valid -- thread sculpin, threaded sculpin
  Gymnocanthus tricuspis (Reinhardt, 1830) -- valid -- Arctic staghorn sculpin, tricorne arctique
  Gymnocephalus cernuus (Linnaeus, 1758) -- valid -- blacktail, pope, ruffe
  Gymnoclinus cristulatus Gilbert and Burke, 1912 -- valid -- trident prickleback
  Gymnomuraena zebra (Shaw in Shaw and Nodder, 1797) -- valid -- morena cebra, zebra moray
  Gymnothorax castaneus (Jordan and Gilbert, 1883) -- valid -- morena verde panámica, Panamic green moray
  Gymnothorax conspersus Poey, 1867 -- valid -- saddled moray
  Gymnothorax dovii (Günther, 1870) -- valid -- finespotted moray, morena pintita
  Gymnothorax equatorialis (Hildebrand, 1946) -- valid -- morena cola pintada, spottail moray
  Gymnothorax funebris Ranzani, 1839 -- valid -- green moray, morena verde
  Gymnothorax hubbsi Böhlke and Böhlke, 1977 -- valid -- lichen moray, morena liquen
  Gymnothorax kolpos Böhlke and Böhlke, 1980 -- valid -- blacktail moray, morena cola negra
  Gymnothorax maderensis (Johnson, 1862) -- valid -- sharktooth moray
  Gymnothorax miliaris (Kaup, 1856) -- valid -- conger moray, goldentail moray, morena cola dorada, morena de cola dorada
  Gymnothorax mordax (Ayres, 1859) -- valid -- California moray, morena de California
  Gymnothorax moringa (Cuvier, 1829) -- valid -- morena manchada, spotted moray
  Gymnothorax nigromarginatus (Girard, 1858) -- valid -- blackedge moray, morena de margen negro
  Gymnothorax ocellatus Agassiz in Spix and Agassiz, 1831 -- valid -- Caribbean ocellated moray, moray eel, morena ocelada, ocellated moray, spotted moray
  Gymnothorax panamensis (Steindachner, 1876) -- valid -- masked moray, morena mapache
  Gymnothorax polygonius Poey, 1875 -- valid -- morena de polígonos, morena polígona, polygon moray, reticulated moray eel
  Gymnothorax saxicola Jordan and Davis, 1891 -- valid -- honeycomb moray, morena panal, morena punteada, ocellated moray
  Gymnothorax verrilli (Jordan and Gilbert, 1883) -- valid -- morena de borde blanco, white-edged moray
  Gymnothorax vicinus (Castelnau, 1855) -- valid -- morena amarilla, morena de boca púrpura, purplemouth moray
  Gymnotidae -- valid -- cuchillos, electric eels, knife-fishes, naked-back knifefishes, nakedback knifefishes, poissons-couteaux
  Gymnotus maculosus Albert and Miller, 1995 -- valid -- cuchillo, spotted knifefish
  Gymnura altavela (Linnaeus, 1758) -- valid -- raya de papel, spiny butterfly ray
  Gymnura crebripunctata (Peters, 1869) -- valid -- longsnout butterfly ray, raya mariposa picuda
  Gymnura marmorata (Cooper, 1864) -- valid -- California butterfly ray, raya mariposa californiana
  Gymnura micrura (Bloch and Schneider, 1801) -- valid -- raya cola de rata, smooth butterfly ray
  Gymnuridae Fowler, 1934 -- valid -- butterfly rays, raies-papillons, rayas mariposa
  Haemulidae -- valid -- burros y roncos, grogneurs, grunts
  Haemulon album Cuvier in Cuvier and Valenciennes, 1830 -- valid -- jallao, margate, ronco jallao
  Haemulon aurolineatum Cuvier in Cuvier and Valenciennes, 1830 -- valid -- jeniguano bocón, ronco jeníguaro, tomtate
  Haemulon bonariense Cuvier in Cuvier and Valenciennes, 1830 -- valid -- black grunt, ronco prieto
  Haemulon carbonarium Poey, 1860 -- valid -- caesar grunt, ronco carbonero
  Haemulon chrysargyreum Günther, 1859 -- valid -- jeníguano amarillo, ronco boquichica, smallmouth grunt
  Haemulon flaviguttatum Gill, 1862 -- valid -- burro de Cortés, Cortez grunt
  Haemulon flavolineatum (Desmarest, 1823) -- valid -- French grunt, ronco condenado
  Haemulon macrostomum Günther, 1859 -- valid -- jeníguano español, Spanish grunt
  Haemulon maculicauda (Gill, 1862) -- valid -- burro rasposo, spottail grunt
  Haemulon melanurum (Linnaeus, 1758) -- valid -- cottonwick, ronco de lomo prieto, ronco lomo manchado
  Haemulon parra (Desmarest, 1823) -- valid -- boquilla, ronco blanco, sailors choice
  Haemulon plumierii (Lacepède, 1801) -- valid -- chac-chí, ronco arará, white grunt
  Haemulon sciurus (Shaw, 1803) -- valid -- bluestriped grunt, ronco amarillo, ronco carite
  Haemulon scudderii Gill, 1862 -- valid -- burro pecoso, majarra prieta, mojarra grunt
  Haemulon sexfasciatum Gill, 1862 -- valid -- barred grunt, burro almejero, graybar grunt
  Haemulon steindachneri (Jordan and Gilbert, 1882) -- valid -- burro latino, Latin grunt
  Haemulon striatum (Linnaeus, 1758) -- valid -- jeníguano rayado, ronco pinto, striped grunt
  Haemulopsis axillaris (Steindachner, 1869) -- valid -- burro blanco, ronco callana, yellowstripe grunt
  Haemulopsis elongatus (Steindachner, 1879) -- valid -- elongate grunt, ronco alargado
  Haemulopsis leuciscus (Günther, 1864) -- valid -- burrito, raucous grunt, ronco ruco
  Haemulopsis nitidus (Steindachner, 1869) -- valid -- ronco brillante, shining grunt
  Halichoeres adustus (Gilbert, 1890) -- valid -- black wrasse, señorita negra
  Halichoeres aestuaricola Bussing, 1972 -- valid -- mangrove wrasse, señorita de manglar
  Halichoeres bathyphilus (Beebe and Tee-Van, 1932) -- valid -- doncella cintaverde, greenband wrasse
  Halichoeres bivittatus (Bloch, 1791) -- valid -- doncella rayada, slippery dick
  Halichoeres caudalis (Poey, 1860) -- valid -- doncella pintada, painted wrasse
  Halichoeres chierchiae Di Caporiacco, 1948 -- valid -- señorita herida, wounded wrasse
  Halichoeres cyanocephalus (Bloch, 1791) -- valid -- doncella cabeciplateada, yellowcheek wrasse
  Halichoeres dispilus (Günther, 1864) -- valid -- chameleon wrasse, señorita camaleón
  Halichoeres garnoti (Valenciennes in Cuvier and Valenciennes, 1839) -- valid -- doncella cabeciamarilla, yellowhead wrasse
  Halichoeres insularis Allen and Robertson, 1992 -- valid -- señorita de Socorro, Socorro wrasse
  Halichoeres maculipinna (Müller and Troschel in Schomburgk, 1848) -- valid -- clown wrasse, doncella payaso
  Halichoeres melanotis (Gilbert, 1890) -- valid -- golden wrasse, señorita dorada
  Halichoeres nicholsi (Jordan and Gilbert, 1882) -- valid -- señorita solterona, spinster wrasse
  Halichoeres notospilus (Günther, 1864) -- valid -- banded wrasse, señorita listada
  Halichoeres pictus (Poey, 1860) -- valid -- doncella arcoiris, rainbow wrasse
  Halichoeres poeyi (Steindachner, 1867) -- valid -- blackear wrasse, doncella ojinegra, doncella orejinegra
  Halichoeres radiatus (Linnaeus, 1758) -- valid -- doncella azulada, doncella pudín, puddingwife
  Halichoeres semicinctus (Ayres, 1859) -- valid -- rock wrasse, señorita piedrera
  Halieutichthys aculeatus (Mitchill, 1818) -- valid -- diablito espinoso, murciélago picudo, pancake batfish
  Haptoclinus apectolophus Böhlke and Robins, 1974 -- valid -- trambollo despeinado, uncombed blenny
  Harengula clupeola (Cuvier, 1829) -- valid -- false herring, false pilchard, sardina escamuda, sardinita carapachona
  Harengula humeralis (Cuvier, 1829) -- valid -- redear herring, redear sardine, sardina de ley, sardinita de ley
  Harengula jaguana Poey, 1865 -- valid -- sardina escamudina, sardinita vivita escamuda, scaled herring, scaled sardine
  Harengula thrissina (Jordan and Gilbert, 1882) -- valid -- flatiron herring, Pacific flatiron herring, sardinita plumilla
  Helicolenus dactylopterus (Delaroche, 1809) -- valid -- blackbelly rosefish
  Hemanthias aureorubens (Longley, 1935) -- valid -- cabrilla cinta, streamer bass
  Hemanthias leptus (Ginsburg, 1952) -- valid -- cabrilla robalo, longtail bass
  Hemanthias peruanus (Steindachner, 1875) -- valid -- cabrilla doblecola, splittail bass
  Hemanthias signifer (Garman, 1899) -- valid -- cabrilla doncella, hookthroat bass, splittail bass
  Hemanthias vivanus (Jordan and Swain, 1885) -- valid -- barbero rojo, red barbier
  Hemicaranx amblyrhynchus (Cuvier in Cuvier and Valenciennes, 1833) -- valid -- bluntnose jack, chicharra, jurelito chato
  Hemicaranx leucurus (Günther, 1864) -- valid -- jurelito aletiamarilla, yellowfin jack
  Hemicaranx zelotes Gilbert in Jordan and Evermann, 1898 -- valid -- blackfin jack, jurelito chocho
  Hemichromis letourneuxi Sauvage, 1880 -- valid -- African jewelfish, north African jewelfish
  Hemilepidotus hemilepidotus (Tilesius, 1811) -- valid -- red Irish lord
  Hemilepidotus jordani Bean, 1881 -- valid -- yellow Irish lord
  Hemilepidotus papilio (Bean, 1880) -- invalid -- butterfly sculpin
  Hemilepidotus spinosus Ayres, 1854 -- valid -- brown Irish lord
  Hemilepidotus zapus Gilbert and Burke, 1912 -- valid -- longfin Irish lord
  Hemiramphidae -- valid -- demi-becs, halfbeaks, pajaritos
  Hemiramphus balao Lesueur, 1821 -- valid -- agujeta balao, balao, escribano balao
  Hemiramphus brasiliensis (Linnaeus, 1758) -- valid -- agujeta brasileña, ballyhoo, escribano de aletas rojas
  Hemiramphus saltator Gilbert and Starks, 1904 -- valid -- longfin halfbeak, pajarito saltador
  Hemitremia flammea (Jordan and Gilbert in Jordan, 1878) -- valid -- flame chub
  Hemitripteridae -- valid -- charrascos cuervo, hémitriptères, searavens
  Hemitripterus americanus (Gmelin, 1789) -- valid -- hémitriptère atlantique, sea raven, sea sculpin
  Hemitripterus bolini (Myers, 1934) -- valid -- bigmouth sculpin
  Heptranchias perlo (Bonnaterre, 1788) -- valid -- sharpnose sevengill shark, tiburón de 7 branchias, tiburón de siete branquias
  Hermosilla azurea Jenkins and Evermann, 1889 -- valid -- chopa bonita, zebra perch, zebraperch
  Heros severus Heckel, 1840 -- valid -- banded cichlid, banded cichlid
  Herpetoichthys fossatus (Myers and Wade, 1941) -- valid -- mustachioed snake eel, tieso bigotón
  Hesperoleucus symmetricus (Baird and Girard, 1854) -- valid -- California roach
  Heterandria bimaculata (Heckel, 1848) -- valid -- guatopote manchado, spottail killifish, twospot livebearer
  Heterandria formosa Girard, 1859 -- valid -- dwarf livebearer, least killifish
  Heterandria jonesii (Günther, 1874) -- valid -- barred killifish, guatopote listado
  Heterenchelyidae -- valid -- anguilas de fango, anguilles de vase, mud eels
  Heteristius cinctus (Osburn and Nichols, 1916) -- valid -- banded stargazer, miraestrellas vendada
  Heteroconger canabus (Cowan and Rosenblatt, 1974) -- valid -- Cape garden eel, congrio del Cabo
  Heteroconger digueti (Pellegrin, 1923) -- valid -- congrio de Cortés, Cortez garden eel
  Heteroconger longissimus Günther, 1870 -- valid -- brown garden eel, congrio de jardín
  Heteroconger luteolus Smith, 1989 -- valid -- yellow garden eel
  Heteroconger pellegrini Castle, 1999 -- valid -- congrio pecoso, speckled garden eel
  Heterodontidae Gray, 1851 -- valid -- bullhead sharks, horn sharks, Port Jackson sharks, requins cornus, tiburones cornudos
  Heterodontus francisci (Girard, 1855) -- valid -- dormilón cornudo, horn shark, requin dormeur cornu, tiburón puerco
  Heterodontus mexicanus Taylor and Castro-Aguirre, 1972 -- valid -- Mexican horn shark, Mexican hornshark, tiburón perro
  Heterophallus rachovii Regan, 1914 -- invalid -- Coatzacoalcos gambusia, guayacón jarocho, rachow's livebearer, rachow's livebearer
  Heteropriacanthus cruentatus (Lacepède, 1801) -- valid -- catalufa espinosa, catalufa roquera, glasseye snapper
  Heterostichus rostratus Girard, 1854 -- valid -- giant kelpfish, sargacero gigante
  Hexagrammidae -- valid -- greenlings, molvas, sourcils
  Hexagrammos decagrammus (Pallas, 1810) -- valid -- kelp greenling
  Hexagrammos lagocephalus (Pallas, 1810) -- valid -- rock greenling
  Hexagrammos octogrammus (Pallas, 1814) -- valid -- masked greenling
  Hexagrammos stelleri Tilesius, 1810 -- valid -- whitespotted greenling
  Hexanchidae Gray, 1851 -- valid -- cow sharks, grisets, sevengill sharks, sixgill sharks, tiburones cañabota
  Hexanchus griseus (Bonnaterre, 1788) -- valid -- bluntnose sixgill shark, marrajo, sixgill shark, tiburón de seis branquias
  Hexanchus nakamurai Teng, 1962 -- valid -- bigeye sixgill shark, cazón de seis branquias
  Himantolophidae -- valid -- deepsea anglerfishes, footballfishes, peces balón, poissons-football
  Himantolophus groenlandicus Reinhardt, 1837 -- valid -- Atlantic footballfish
  Himantolophus sagamius (Tanaka, 1918) -- valid -- Pacific footballfish
  Himantura pacifica (Beebe and Tee-van, 1941) -- valid -- Pacific whiptail stingray, raya coluda del Pacífico
  Himantura schmardae (Werner, 1904) -- valid -- Caribbean whiptail stingray, Chupare stingray, lebisa, raya coluda caribeña
  Hiodon alosoides (Rafinesque, 1819) -- valid -- goldeye, laquaiche aux yeux d'or
  Hiodon tergisus Lesueur, 1818 -- valid -- laquaiche argentée, mooneye
  Hiodontidae -- valid -- laquaiches, mooneyes, ojos de luna
  Hippocampus erectus Perry, 1810 -- valid -- caballito erecto, caballito estriado, lined seahorse, spotted seahorse
  Hippocampus ingens Girard, 1858 -- valid -- caballito del Pacífico, Pacific giant seahorse, Pacific seahorse
  Hippocampus reidi Ginsburg, 1933 -- valid -- caballito hocico largo, caballito narizon, longsnout seahorse
  Hippocampus zosterae Jordan and Gilbert, 1882 -- valid -- caballito enano, caballito oliváceo, dwarf seahorse, little seahorse, pygmy seahorse
  Hippoglossina bollmani Gilbert, 1890 -- valid -- lenguado pintado, spotted flounder, Spotted Flounder
  Hippoglossina stomata Eigenmann & Eigenmann, 1890 -- valid -- bigmouth sole, Bigmouth Sole, lenguado bocón
  Hippoglossina tetrophthalma (Gilbert, 1890) -- valid -- foureye flounder, Foureye Flounder, lenguado cuatrojos
  Hippoglossoides elassodon Jordan & Gilbert, 1880 -- valid -- flathead sole, Flathead Sole, plie à tête plate
  Hippoglossoides platessoides (Fabricius, 1780) -- valid -- American dab, American plaice, American Plaice, Canadian plaice, dab, plie canadienne
  Hippoglossoides robustus Gill & Townsend, 1897 -- valid -- Bering flounder, Bering Flounder, plie de Béring
  Hippoglossus hippoglossus (Linnaeus, 1758) -- valid -- Atlantic halibut, Atlantic Halibut, flétan atlantique
  Hippoglossus stenolepis Schmidt, 1904 -- valid -- alabato del Pacífico, flétan du Pacifique, Pacific Halibut, Pacific halibut
  Hirundichthys affinis (Günther, 1866) -- valid -- fourwing flyingfish, volador de 4 alas, volador golondrina
  Hirundichthys marginatus (Nichols and Breder, 1928) -- valid -- bladewing flyingfish, volador ala navaja
  Hirundichthys rondeletii (Valenciennes in Cuvier and Valenciennes, 1847) -- valid -- blackwing flyingfish, brownwinged flyingfish, nonsuch flyingfish, volador ala negra, volador de alas negras
  Hirundichthys speculiger (Valenciennes in Cuvier and Valenciennes, 1847) -- valid -- mirrorwing flyingfish, volador espejo
  Histrio histrio (Linnaeus, 1758) -- valid -- pez sargazo, sargassum frogfish, sargassumfish
  Holacanthus bermudensis Goode, 1876 -- valid -- blue angelfish, chabelita azul, isabelita azul
  Holacanthus ciliaris (Linnaeus, 1758) -- valid -- ángel reina, isabelita reina, queen angelfish
  Holacanthus clarionensis Gilbert, 1891 -- valid -- ángel de Clarión, Clarion angelfish
  Holacanthus passer Valenciennes, 1846 -- valid -- ángel real, king angelfish, whitestripe angelfish
  Holacanthus tricolor (Bloch, 1795) -- valid -- chabelita tricolor, rock beauty, vaqueta de dos colores
  Hollardia meadi Tyler, 1966 -- valid -- rombo pardo, spotted spikefish
  Holocentridae -- valid -- candiles, marignans, soldierfishes, squirrelfishes
  Holocentrus adscensionis (Osbeck, 1765) -- valid -- candil de vidrio, carajuelo de ascención, squirrelfish
  Holocentrus rufus (Walbaum, 1792) -- valid -- candil rufo, carajuelo rufo, longspine squirrelfish
  Holocephali -- valid -- cartilaginous fishes, chimaeras
  Hoplopagrus guentherii Gill, 1862 -- valid -- barred pargo, Mexican barred snapper, pargo coconaco, striped pargo
  Hoplosternum littorale (Hancock, 1828) -- valid -- brown hoplo
  Hoplosternum littoralis (Hancock, 1828) -- invalid -- brown hoplo
  Hoplunnis diomediana Goode and Bean, 1896 -- valid -- blacktail pike-conger, blacktail pikeconger, serpentina albatros
  Hoplunnis macrura Ginsburg, 1951 -- valid -- freckled pike-conger, freckled pikeconger, serpentina cola grande, silver conger
  Hoplunnis pacifica Lane and Stewart, 1968 -- valid -- serpentina plateada, silver pikeconger
  Hoplunnis tenuis Ginsburg, 1951 -- valid -- congrio colilargo, serpentina dientona, spotted pike-conger, spotted pikeconger
  Hubbsina turneri de Buen, 1940 -- invalid -- highland splitfin, mexcalpique michoacano, Turner's hochlandkarpfling
  Hybognathus amarus (Girard, 1856) -- valid -- carpa Chamizal, Rio Grande silvery minnow
  Hybognathus argyritis Girard, 1856 -- valid -- western silvery minnow
  Hybognathus hankinsoni Hubbs in Jordan, 1929 -- valid -- brassy minnow, méné laiton
  Hybognathus hayi Jordan, 1885 -- valid -- cypress minnow
  Hybognathus nuchalis Agassiz, 1855 -- valid -- méné d'argent, Mississippi silvery minnow
  Hybognathus placitus Girard, 1856 -- valid -- plains minnow
  Hybognathus regius Girard, 1856 -- valid -- eastern silvery minnow, méné d'argent
  Hybopsis amblops (Rafinesque, 1820) -- valid -- bigeye chub
  Hybopsis amnis (Hubbs and Greene in Hubbs, 1951) -- valid -- pallid chub, pallid shiner
  Hybopsis boucardi (Günther, 1868) -- valid -- Balsas shiner, carpita del Balsas
  Hybopsis dorsalis Agassiz, 1854 -- valid -- bigmouth shiner
  Hybopsis hypsinotus (Cope, 1870) -- valid -- highback chub
  Hybopsis lineapunctata Clemmer and Suttkus, 1971 -- valid -- lined chub
  Hybopsis rubrifrons (Jordan, 1877) -- valid -- rosyface chub
  Hybopsis winchelli Girard, 1856 -- valid -- clear chub
  Hydrolagus colliei (Lay and Bennett, 1839) -- valid -- quimera manchada, spotted ratfish
  Hypentelium etowanum (Jordan, 1877) -- valid -- Alabama hog sucker
  Hypentelium nigricans (Lesueur, 1817) -- valid -- northern hog sucker
  Hypentelium roanokense Raney and Lachner, 1947 -- valid -- Roanoke hog sucker
  Hyperoglyphe bythites (Ginsburg, 1954) -- valid -- black driftfish
  Hyperoglyphe perciformis (Mitchill, 1818) -- valid -- barrelfish
  Hyperprosopon anale Agassiz, 1861 -- valid -- mojarra aletimanchada, spotfin surfperch
  Hyperprosopon argenteum Gibbons, 1854 -- valid -- mojarra ojona, walleye surfperch
  Hyperprosopon ellipticum (Gibbons, 1854) -- valid -- mojarra ovalada, silver surfperch
  Hyphessobrycon compressus (Meek, 1904) -- valid -- Maya tetra, sardinita plateada
  Hypleurochilus bermudensis Beebe and Tee-van, 1933 -- valid -- barred blenny, borracho de barras
  Hypleurochilus caudovittatus Bath, 1994 -- valid -- zebratail blenny
  Hypleurochilus geminatus (Wood, 1825) -- valid -- blenio crestado, crested blenny
  Hypleurochilus multifilis (Girard, 1858) -- valid -- borracho plumero, featherduster blenny
  Hypleurochilus pseudoaequipinnis Bath, 1994 -- valid -- borracho ostionero, oyster blenny
  Hypleurochilus springeri Randall, 1966 -- valid -- orangespotted blenny
  Hypoatherina harringtonensis (Goode, 1877) -- valid -- catacuche, reef silverside, tinícalo de arrecife
  Hypomesus nipponensis McAllister, 1963 -- valid -- wakasagi, Wakasagi smelt
  Hypomesus olidus (Pallas, 1814) -- valid -- pond smelt
  Hypomesus pretiosus (Girard, 1854) -- valid -- surf smelt
  Hypomesus transpacificus McAllister, 1963 -- valid -- delta smelt
  Hypophthalmichthys molitrix (Valenciennes in Cuvier and Valenciennes, 1844) -- valid -- carpa plateada, silver carp
  Hypophthalmichthys nobilis (Richardson, 1845) -- valid -- bighead carp, carpa cabezona
  Hypoplectrus aberrans Poey, 1868 -- valid -- vaca de vientre amarillo, yellowbelly hamlet
  Hypoplectrus gemma Goode and Bean, 1882 -- valid -- blue hamlet
  Hypoplectrus guttavarius (Poey, 1852) -- valid -- golden hamlet, shy hamlet, vaca dorada
  Hypoplectrus indigo (Poey, 1851) -- valid -- indigo hamlet, vaca añil
  Hypoplectrus nigricans (Poey, 1852) -- valid -- black hamlet, mero carbonero, vaca negra
  Hypoplectrus puella (Cuvier in Cuvier and Valenciennes, 1828) -- valid -- barred hamlet, mero barril, vaca barreada
  Hypoplectrus unicolor (Walbaum, 1792) -- valid -- butter hamlet, mero mantequilla, vaca blanca
  Hyporhamphus gilli Meek and Hildebrand, 1923 -- valid -- choelo halfbeak, pajarito cholo
  Hyporhamphus meeki Banford and Collette, 1993 -- valid -- agujeta flaca, American halfbeak, false silverstripe halfbeak, Meek's halfbeak
  Hyporhamphus mexicanus Alvarez, 1959 -- valid -- Mexican halfbeak, pajarito mexicano
  Hyporhamphus naos Banford and Collette, 2001 -- valid -- Pacific silverstripe halfbeak, pajarito blanco del Pacífico
  Hyporhamphus rosae (Jordan and Gilbert, 1880) -- valid -- California halfbeak, pajarito californiano
  Hyporhamphus snyderi Meek and Hildebrand, 1923 -- valid -- pajarito choca, skipper halfbeak
  Hyporhamphus unifasciatus (Ranzani, 1841) -- valid -- Atlantic silverstripe halfbeak, escribano, halfbeak, pajarito blanco del Atlántico, silverstripe halfbeak
  Hypostomus plecostomus (Linnaeus, 1758) -- valid -- suckermouth catfish
  Hypsagonus mozinoi (Wilimovsky and Wilson, 1979) -- invalid -- kelp poacher
  Hypsagonus quadricornis (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- fourhorn poacher
  Hypsoblennius brevipinnis (Günther, 1861) -- valid -- barnaclebill blenny, borracho vacilón
  Hypsoblennius gentilis (Girard, 1854) -- valid -- bay blenny, borracho de bahía
  Hypsoblennius gilberti (Jordan, 1882) -- valid -- borracho de poza, rockpool blenny
  Hypsoblennius hentz (Lesueur, 1825) -- valid -- feather blenny
  Hypsoblennius invemar Smith-Vaniz and Acero P. in Smith-Vaniz, 1980 -- valid -- tessellated blenny
  Hypsoblennius ionthas (Jordan and Gilbert, 1882) -- valid -- freckled blenny
  Hypsoblennius jenkinsi (Jordan and Evermann in Jordan, 1896) -- valid -- borracho mejillonero, mussel blenny
  Hypsoblennius proteus (Krejsa, 1960) -- valid -- borracho de Socorro, Socorro blenny
  Hypsurus caryi (Agassiz, 1853) -- valid -- mojarra arcoiris, rainbow seaperch
  Hypsypops rubicundus (Girard, 1854) -- valid -- garibaldi, jaqueta garibaldi
  Hysterocarpus traskii Gibbons, 1854 -- valid -- tule perch
  Icelinus borealis Gilbert, 1896 -- valid -- northern sculpin
  Icelinus burchami Evermann and Goldsborough, 1907 -- valid -- dusky sculpin
  Icelinus cavifrons Gilbert, 1890 -- valid -- charrasco cabeza bacha, pit-head sculpin
  Icelinus filamentosus Gilbert, 1890 -- valid -- threadfin sculpin
  Icelinus fimbriatus Gilbert, 1890 -- valid -- fringed sculpin
  Icelinus oculatus Gilbert, 1890 -- valid -- frogmouth sculpin
  Icelinus quadriseriatus (Lockington, 1880) -- valid -- charrasco barbiamarilla, yellowchin sculpin
  Icelinus tenuis Gilbert, 1890 -- valid -- charrasco aletimanchada, spotfin sculpin
  Icelus bicornis (Reinhardt, 1840) -- valid -- icèle à deux cornes, twohorn sculpin
  Icelus canaliculatus Gilbert, 1896 -- valid -- blacknose sculpin
  Icelus euryops Bean, 1890 -- valid -- wide-eye sculpin
  Icelus spatula Gilbert and Burke, 1912 -- valid -- icèle spatulée, spatulate sculpin
  Icelus spiniger Gilbert, 1896 -- valid -- thorny sculpin
  Icelus uncinalis Gilbert and Burke, 1912 -- valid -- uncinate sculpin
  Ichthyapus ophioneus (Evermann and Marsh, 1900) -- valid -- finless snake eel, safío amarillo, surf eel, tieso alacrán
  Ichthyapus selachops (Jordan and Gilbert, 1882) -- valid -- smiling sand eel, tieso sonriente
  Ichthyomyzon bdellium (Jordan, 1885) -- valid -- lamproie de l'Ohio, Ohio lamprey
  Ichthyomyzon castaneus Girard, 1858 -- valid -- chestnut lamprey, lamproie brune
  Ichthyomyzon fossor Reighard and Cummins, 1916 -- valid -- lamproie de ruisseau septentrionale, lamproie du nord, northern brook lamprey
  Ichthyomyzon gagei Hubbs and Trautman, 1937 -- valid -- lamproie de ruisseau méridionale, southern brook lamprey
  Ichthyomyzon greeleyi Hubbs and Trautman, 1937 -- valid -- Allegheny brook lamprey, lamproie de ruisseau d'Allegheny, mountain brook lamprey
  Ichthyomyzon unicuspis Hubbs and Trautman, 1937 -- valid -- lamproie argentée, silver lamprey
  Icichthys lockingtoni Jordan and Gilbert, 1880 -- valid -- brown rudderfish, cojinoba medusa, medusafish
  Icosteidae -- valid -- icostéidés, peces harapo, ragfishes
  Icosteus aenigmaticus Lockington, 1880 -- valid -- ragfish
  Ictaluridae Gill, 1861 -- valid -- bagres de agua dulce, barbottes, barbottes et barbues, barbues, bullhead catfishes, North American catfishes, North American freshwater catfishes
  Ictalurus australis (Meek, 1904) -- valid -- bagre del Pánuco, Panuco catfish
  Ictalurus balsanus (Jordan and Snyder, 1899) -- valid -- bagre del Balsas, Balsas catfish
  Ictalurus dugesii (Bean, 1880) -- valid -- bagre del Lerma, Lerma catfish
  Ictalurus furcatus (Valenciennes in Cuvier and Valenciennes, 1840) -- valid -- bagre azul, blue catfish
  Ictalurus lupus (Girard, 1858) -- valid -- bagre lobo, headwater catfish
  Ictalurus mexicanus (Meek, 1904) -- valid -- bagre del Verde, Rio Verde catfish
  Ictalurus ochoterenai (de Buen, 1946) -- valid -- bagre de Chapala, Chapala catfish
  Ictalurus pricei (Rutter, 1896) -- valid -- bagre yaqui, Yaqui catfish
  Ictalurus punctatus (Rafinesque, 1818) -- valid -- bagre de canal, barbue de rivière, channel catfish, graceful catfish
  Ictiobus bubalus (Rafinesque, 1818) -- valid -- matalote boquín, smallmouth buffalo
  Ictiobus cyprinellus (Valenciennes in Cuvier and Valenciennes, 1844) -- valid -- bigmouth buffalo
  Ictiobus labiosus (Meek, 1904) -- valid -- fleshylip buffalo, matalote bocón
  Ictiobus meridionalis (Günther, 1868) -- valid -- matalote meridional, southern buffalo, Usumacinta buffalo
  Ictiobus niger (Rafinesque, 1819) -- valid -- black buffalo, matalote negro
  Ilisha fuerthii (Steindachner, 1875) -- valid -- hatchet herring, Pacific ilisha, sardina hacha
  Ilyodon cortesae Paulo-Maya and Trujillo-Jiménez, 2000 -- valid -- freckled splitfin, mexcalpique pecoso
  Ilyodon furcidens (Jordan and Gilbert, 1882) -- valid -- goldbreast splitfin, mexcalpique de Armería
  Ilyodon lennoni Meyer and Foerster, 1983 -- valid -- Chacambero splitfin, mexcalpique de Chacambero
  Ilyodon whitei (Meek, 1904) -- valid -- Balsas splitfin, mexcalpique cola partida
  Ilyodon xantusi (Hubbs and Turner, 1939) -- valid -- Limones splitfin, mexcalpique de Los Limones
  Ilypnus gilberti (Eigenmann and Eigenmann, 1889) -- valid -- cheekspot goby, gobio mejilla manchada
  Ilypnus luculentus (Ginsburg, 1938) -- valid -- bright goby, gobio brillante
  Inermia vittata Poey, 1860 -- valid -- boga, boga
  Inermiidae -- valid -- bogas, bonnetmouths, inermiidés
  Iniistius pavo (Valenciennes in Cuvier and Valenciennes, 1840) -- valid -- cuchillo pavo real, peacock razorfish, peacock wrasse
  Iotichthys phlegethontis (Cope, 1874) -- valid -- least chub
  Isistius brasiliensis (Quoy and Gaimard, 1824) -- valid -- cookiecutter shark, tiburón cigarro
  Isopisthus remifer Jordan and Gilbert, 1882 -- valid -- bigeye corvina, corvina ojona
  Isopsetta isolepis (Lockington, 1880) -- valid -- butter sole, Butter Sole, plie à écailles régulières
  Istiophoridae -- valid -- billfishes, marlins, picudos, sailfishes, spearfishes, voiliers
  Istiophorus platypterus (Shaw in Shaw and Nodder, 1792) -- valid -- aguja de abanico, Atlantic sailfish, bayonet fish, Indo-Pacific sailfish, pez vela, sailfish
  Isurus oxyrinchus Rafinesque, 1810 -- valid -- dientuso azul, mako, shortfin mako
  Isurus paucus Guitart Manday, 1966 -- valid -- dientuso prieto, longfin mako, mako aletón, marrajo carite, petit taupe
  Jenkinsia lamprotaenia (Gosse, 1851) -- valid -- dwarf herring, dwarf round herring, manjúa, sardinita flaca
  Jenkinsia majua Whitehead, 1963 -- valid -- little-eye herring, little-eye round herring, sardineta, sardinita ojito
  Jenkinsia stolifera (Jordan and Gilbert, 1884) -- valid -- Florida round herring, sardinita de cayo, shortband herring
  Johnrandallia nigrirostris (Gill, 1862) -- valid -- barberfish, mariposa barbero
  Jordanella floridae Goode and Bean in Goode, 1879 -- valid -- American flagfish, flagfish
  Jordanella pulchra (Hubbs, 1936) -- invalid -- cachorrito de Progreso, Progreso flagfish
  Jordania zonope Starks, 1895 -- valid -- longfin sculpin
  Joturus pichardi Poey, 1860 -- valid -- bobo, bobo, bobo mullet, hog mullet, joturo, joturo
  Kasatkia seigeli Posner and Lavenberg, 1999 -- valid -- sixspot prickleback
  Kathetostoma albigutta Bean, 1892 -- valid -- lancer stargazer, miracielo sargacero
  Kathetostoma averruncus Jordan and Bollman, 1890 -- valid -- miracielo buldog, smooth stargazer
  Katsuwonus pelamis (Linnaeus, 1758) -- valid -- Arctic bonito, barrilete listado, bonite à ventre rayé, bonito listado, listado, mushmouth, oceanic bonito, skipjack, skipjack tuna, striped tuna, victor fish
  Kaupichthys hyoproroides (Strömman, 1896) -- valid -- anguililla de arrecife, false moray, morena falsa de arrecife, reef moray
  Kaupichthys nuchalis Böhlke, 1967 -- valid -- anguililla de collar, collared eel, morena falsa de collar
  Kuhlia mugil (Forster in Bloch and Schneider, 1801) -- valid -- barred flagtail, dara bandera
  Kuhliidae -- valid -- aholeholes, crocros, daras, flagtails, mountain basses
  Kyphosidae -- valid -- chopas, kyphoses, pilotfishes, rudderfishes, sea chubs
  Kyphosus analogus (Gill, 1862) -- valid -- blue-bronze chub, chopa rayada, salema
  Kyphosus elegans (Peters, 1869) -- valid -- chopa, chopa, chopa de Cortés, Cortez sea chub
  Kyphosus incisor (Cuvier in Cuvier and Valenciennes, 1831) -- valid -- chopa amarilla, yellow chub
  Kyphosus lutescens (Jordan and Gilbert, 1882) -- valid -- chopa de Revillagigedo, Revillagigedo sea chub
  Kyphosus sectatrix (Linnaeus, 1758) -- invalid -- Bermuda chub, chopa blanca
  Labidesthes sicculus (Cope, 1865) -- valid -- brook silverside, crayon d'argent
  Labridae Cuvier, 1816 -- valid -- doncellas y señoritas, labres, labridés, rainbowfishes, wrasses
  Labrisomidae -- valid -- labrisomid blennies, labrisomidés, trambollos
  Labrisomus bucciferus Poey, 1868 -- valid -- puffcheek blenny, sapito fumador, trambollo fumador
  Labrisomus gobio (Valenciennes in Cuvier and Valenciennes, 1836) -- valid -- palehead blenny, sapito ojudo, trambollo caripálida
  Labrisomus guppyi (Norman, 1922) -- valid -- mimic blenny, sapito prieto, trambollo mímico
  Labrisomus haitiensis Beebe and Tee-van, 1928 -- valid -- longfin blenny, sapito de roca, trambollo príncipe
  Labrisomus kalisherae (Jordan, 1904) -- valid -- downy blenny, trambollo velloso
  Labrisomus multiporosus Hubbs, 1953 -- valid -- porehead blenny, trambollo cabeza porosa
  Labrisomus nigricinctus Howell Rivero, 1936 -- valid -- sapito lunado, spotcheek blenny, trambollo lunado
  Labrisomus nuchipinnis (Quoy and Gaimard, 1824) -- valid -- hairy blenny, sapito cabezón, trambollo peludo
  Labrisomus socorroensis Hubbs, 1953 -- valid -- misspelled blenny, trambollo de Socorro
  Labrisomus striatus Hubbs, 1953 -- valid -- green blenny, trambollo listado
  Labrisomus wigginsi Hubbs, 1953 -- valid -- Baja blenny, trambollo bajacaliforniano
  Labrisomus xanti Gill, 1860 -- valid -- chalapo, largemouth blenny, rock blenny, rock blenny
  Lachnolaimus maximus (Walbaum, 1792) -- valid -- boquinete, hogfish, pez perro
  Lactophrys bicaudalis (Linnaeus, 1758) -- valid -- chapín de lunares negros, chapín pintado, spotted trunkfish
  Lactophrys trigonus (Linnaeus, 1758) -- valid -- chapín búfalo, chapín de lunares, trunkfish
  Lactophrys triqueter (Linnaeus, 1758) -- valid -- chapín baqueta, chapín común, smooth trunkfish
  Lactoria diaphana (Bloch and Schneider, 1801) -- valid -- cofre espinoso, spiny boxfish
  Laemonema barbatulum Goode and Bean, 1883 -- valid -- shortbeard codling, smallscale mora
  Lagocephalus laevigatus (Linnaeus, 1766) -- valid -- botete grande, smooth puffer, tamboril gigante
  Lagocephalus lagocephalus (Linnaeus, 1758) -- valid -- botete oceánico, oceanic puffer, tamboril oceanico
  Lagodon rhomboides (Linnaeus, 1766) -- valid -- chopa espina, pinfish, xlavitia
  Lamna ditropis Hubbs and Follett, 1947 -- valid -- salmon shark, tiburón salmón
  Lamna nasus (Bonnaterre, 1788) -- valid -- maraîche, porbeagle
  Lamnidae Müller and Henle, 1838 -- valid -- jaquetones, mackerel sharks, porbeagles, requins-taupes, white sharks
  Lampadena speculigera Goode and Bean, 1896 -- valid -- mirror lanternfish
  Lampanyctus crocodilus (Risso, 1810) -- valid -- crocodile lanternfish, grande lampe-bouée, jewel lanternfish
  Lampetra aepyptera (Abbott, 1860) -- valid -- least brook lamprey, petite lamproie de ruisseau
  Lampetra appendix (DeKay, 1842) -- invalid -- American brook lamprey, lamproie de l'est
  Lampetra ayresii (Günther, 1870) -- valid -- lamproie de rivière de l'ouest, river lamprey, western river lamprey
  Lampetra camtschatica (Tilesius, 1811) -- invalid -- Arctic lamprey
  Lampetra geminis (Álvarez, 1964) -- invalid -- Jacona lamprey, lamprea de Jacona
  Lampetra hubbsi (Vladykov and Kott, 1976) -- valid -- Kern brook lamprey
  Lampetra lethophaga Hubbs, 1971 -- invalid -- Pit-Klamath brook lamprey
  Lampetra macrostoma Beamish, 1982 -- invalid -- Vancouver lamprey
  Lampetra minima Bond and Kan, 1973 -- invalid -- Miller Lake lamprey
  Lampetra richardsoni Vladykov and Follett, 1965 -- valid -- lamproie de ruisseau occidentale, western brook lamprey
  Lampetra similis (Vladykov and Kott, 1979) -- invalid -- Klamath lamprey
  Lampetra spadicea Bean, 1887 -- invalid -- Chapala lamprey, lamprea de Chapala
  Lampetra tridentata (Richardson, 1836) -- invalid -- lamprea del Pacífico, Pacific lamprey
  Lamprididae -- valid -- opahs, opahs, opahs
  Lampris guttatus (Brünnich, 1788) -- valid -- opah, opah, pez mariposa
  Larimus acclivis Jordan and Bristol in Jordan and Evermann, 1898 -- valid -- boquinete, steeplined drum
  Larimus argenteus (Gill, 1863) -- valid -- boquinete chato, silver drum
  Larimus effulgens Gilbert in Jordan and Evermann, 1898 -- valid -- boquinete boca de novia, shining drum
  Larimus fasciatus Holbrook, 1855 -- valid -- banded drum, boquinete listado
  Larimus pacificus Jordan and Bollman, 1890 -- valid -- boquinete del Pacífico, Pacific drum
  Lavinia exilicauda Baird and Girard in Girard, 1854 -- valid -- hitch
  Leiocottus hirundo Girard, 1856 -- valid -- charrasco lavanda, lavender sculpin
  Leiostomus xanthurus Lacepède, 1802 -- valid -- croca, spot
  Lepidocybium flavobrunneum (Smith, 1843) -- valid -- escolar, escolar negro, petróleo
  Lepidogobius lepidus (Girard, 1858) -- valid -- bay goby, gobio frío
  Lepidomeda albivallis Miller and Hubbs, 1960 -- valid -- White River spinedace
  Lepidomeda altivelis Miller and Hubbs, 1960 -- valid -- Pahranagat spinedace
  Lepidomeda mollispinis Miller and Hubbs, 1960 -- valid -- Virgin spinedace
  Lepidomeda vittata Cope, 1874 -- valid -- Little Colorado spinedace
  Lepidopsetta bilineata (Ayres, 1855) -- valid -- fausse limande du Pacifique, Rock Sole, rock sole
  Lepidopsetta polyxystra Orr & Matarese, 2000 -- valid -- limande du nord, Northern Rock Sole, northern rock sole
  Lepidopus altifrons Parin and Collette, 1993 -- valid -- crested scabbardfish
  Lepidopus fitchi Rosenblatt and Wilson, 1987 -- valid -- black scabbardfish, Fitch's scabbardfish, Pacific scabbardfish, pez cinto
  Lepisosteidae -- valid -- gar pikes, garfishes, gars, lépisostés, pejelagartos
  Lepisosteiformes -- invalid
  Lepisosteus oculatus Winchell, 1864 -- valid -- catán pinto, lépisosté tacheté, shortnose gar, spotted gar
  Lepisosteus osseus (Linnaeus, 1758) -- valid -- catán aguja, lépisosté osseux, longnose gar
  Lepisosteus platostomus Rafinesque, 1820 -- valid -- shortnose gar
  Lepisosteus platyrhincus DeKay, 1842 -- valid -- Florida gar
  Lepomis auritus (Linnaeus, 1758) -- valid -- crapet rouge, mojarra pecho rojo, Redbreast Sunfish
  Lepomis cyanellus Rafinesque, 1819 -- valid -- crapet vert, Green Sunfish, pez sol
  Lepomis gibbosus (Linnaeus, 1758) -- valid -- crapet-soleil, kiver, Pumpkinseed
  Lepomis gulosus (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- crapet sac-à-lait, mojarra golosa, Warmouth
  Lepomis humilis (Girard, 1858) -- valid -- Orangespotted Sunfish
  Lepomis macrochirus Rafinesque, 1819 -- valid -- Bluegill, crapet arlequin, mojarra oreja azul
  Lepomis marginatus (Holbrook, 1855) -- valid -- Dollar Sunfish
  Lepomis megalotis (Rafinesque, 1820) -- valid -- crapet à longues oreilles, Longear Sunfish, mojarra gigante, mojarra orejona
  Lepomis microlophus (Günther, 1859) -- valid -- mojarra oreja roja, Redear Sunfish
  Lepomis miniatus (Jordan, 1877) -- valid -- Redspotted Sunfish, scarlet sunfish
  Lepomis punctatus (Valenciennes in Cuvier and Valenciennes, 1831) -- valid -- mojarra manchada, Spotted Sunfish
  Lepomis symmetricus Forbes in Jordan and Gilbert, 1883 -- valid -- Bantam Sunfish
  Lepophidium brevibarbe (Cuvier, 1829) -- valid -- blackedge cusk-eel, clarín, congriperla clarín
  Lepophidium jeannae Fowler, 1941 -- valid -- congriperla jaspeada, mottled cusk-eel
  Lepophidium microlepis (Gilbert, 1890) -- valid -- congriperla plateada, finescale cusk-eel
  Lepophidium negropinna Hildebrand and Barton, 1949 -- valid -- congriperla pinta, specklefin cusk-eel
  Lepophidium pardale (Gilbert, 1890) -- valid -- congriperla leopardo, leopard cusk-eel
  Lepophidium pheromystax Robins, 1960 -- valid -- congriperla bigotona, upsilon cusk-eel
  Lepophidium profundorum (Gill, 1863) -- valid -- clarín, congriperla amarilla, fawn cusk-eel
  Lepophidium prorates (Jordan and Bollman, 1890) -- valid -- congriperla cornuda, prowspine cusk-eel
  Lepophidium staurophor Robins, 1959 -- valid -- barred cusk-eel, congriperla rayada
  Lepophidium stigmatistium (Gilbert, 1890) -- valid -- congriperla mexicana, Mexican cusk-eel
  Leptagonus decagonus (Bloch and Schneider, 1801) -- valid -- agone atlantique, Atlantic poacher
  Leptagonus frenatus (Gilbert, 1896) -- invalid -- sawback poacher
  Leptagonus leptorhynchus (Gilbert, 1896) -- invalid -- longnose poacher
  Leptoclinus maculatus (Fries, 1838) -- valid -- daubed shanny, lompénie tachetée
  Leptocottus armatus Girard, 1854 -- valid -- charrasco de astas, Pacific staghorn sculpin
  Leptolucania ommata (Jordan, 1884) -- valid -- pygmy killifish
  Letharchus rosenblatti McCosker, 1974 -- valid -- black sailfin eel, tieso vela negro
  Letharchus velifer Goode and Bean, 1882 -- valid -- sailfin eel
  Lethogoleos andersoni McCosker and Böhlke, 1982 -- valid -- forgetful snake eel
  Lethops connectens Hubbs, 1926 -- valid -- gobio sargacero, halfblind goby
  Lethotremus muticus Gilbert, 1896 -- valid -- docked snailfish
  Leuciscus idus (Linnaeus, 1758) -- valid -- ide, orfe
  Leucoraja erinacea (Mitchill, 1825) -- valid -- common skate, little skate, raie-hérisson, summer skate
  Leucoraja garmani (Whitley, 1939) -- valid -- rosette skate
  Leucoraja lentiginosa (Bigelow and Schroeder, 1951) -- valid -- freckled skate, raya pecosa, speckled skate
  Leucoraja ocellata (Mitchill, 1815) -- valid -- big skate, eyed skate, raie tachetée, winter skate
  Leuresthes sardina (Jenkins and Evermann, 1889) -- valid -- Gulf grunion, pejerrey sardina
  Leuresthes tenuis (Ayres, 1860) -- valid -- California grunion, pejerrey californiano
  Leuroglossus schmidti Rass, 1955 -- valid -- northern smoothtongue
  Leuroglossus stilbius Gilbert, 1890 -- valid -- California smoothtongue, lengualisa californiana
  Leuropharus lasiops Rosenblatt and McCosker, 1970 -- valid -- acned snake eel, tieso pustuloso
  Lile gracilis Castro-Aguirre and Vivero, 1990 -- valid -- graceful herring, sardinita agua dulce
  Lile nigrofasciata Castro-Aguirre, Ruiz-Campos and Balart, 2002 -- valid -- blackstripe herring, sardinita raya negra
  Lile stolifera (Jordan and Gilbert, 1882) -- valid -- Pacific piquitinga, sardinita rayada, striped herring
  Limanda aspera (Pallas, 1814) -- valid -- limande à nageoires jaunes, Yellowfin Sole, yellowfin sole
  Limanda ferruginea (Storer, 1839) -- valid -- limande à queue jaune, rusty flounder, yellowtail flounder, Yellowtail Flounder
  Limanda proboscidea Gilbert, 1896 -- valid -- limande carline, Longhead Dab, longhead dab
  Limanda sakhalinensis Hubbs, 1915 -- valid -- Sakhalin sole, Sakhalin Sole
  Liopropoma carmabi (Randall, 1963) -- valid -- candy basslet
  Liopropoma eukrines (Starck and Courtenay, 1962) -- valid -- wrasse bass, wrasse basslet
  Liopropoma fasciatum Bussing, 1980 -- valid -- cabrilla arcoiris, rainbow basslet
  Liopropoma longilepis Garman, 1899 -- valid -- cabrilla aleta escamosa, scalyfin basslet
  Liopropoma mowbrayi Woods and Kanazawa, 1951 -- valid -- cabrilla de cueva, cave bass, cave basslet, guardia rojo
  Liopropoma rubre Poey, 1861 -- valid -- cabrilla menta, guardia suizo, peppermint bass, peppermint basslet
  Liparidae -- valid -- limaces de mer, peces babosos, snailfishes
  Liparis atlanticus (Jordan and Evermann, 1898) -- valid -- Atlantic seasnail, limace atlantique, seasnail
  Liparis beringianus (Gilbert and Burke, 1912) -- invalid -- Bering snailfish
  Liparis bristolensis (Burke, 1912) -- valid -- Bristol snailfish
  Liparis callyodon (Pallas, 1814) -- valid -- spotted snailfish
  Liparis catharus Vogt, 1973 -- valid -- purity snailfish
  Liparis coheni Able, 1976 -- valid -- Gulf snailfish, limace de Cohen
  Liparis cyclopus Günther, 1861 -- valid -- ribbon snailfish
  Liparis dennyi Jordan and Starks, 1895 -- valid -- marbled snailfish
  Liparis fabricii Krøyer, 1847 -- valid -- gelatinous seasnail, limace gélatineuse
  Liparis florae (Jordan and Starks, 1895) -- valid -- tidepool snailfish
  Liparis fucensis Gilbert, 1896 -- valid -- slipskin snailfish
  Liparis gibbus Bean, 1881 -- valid -- limace marbrée, polka-dot snailfish, variegated snailfish, varigated snailfish
  Liparis greeni (Jordan and Starks, 1895) -- invalid -- lobefin snailfish
  Liparis inquilinus Able, 1973 -- valid -- inquiline snailfish, limace des pétoncles
  Liparis marmoratus Schmidt, 1950 -- valid -- festive snailfish
  Liparis megacephalus (Burke, 1912) -- valid -- bighead snailfish
  Liparis micraspidophorus (Gilbert and Burke, 1912) -- valid -- thumbtack snailfish
  Liparis mucosus Ayres, 1855 -- valid -- baboso mucoso, slimy snailfish
  Liparis ochotensis Schmidt, 1904 -- valid -- Okhotsk snailfish
  Liparis pulchellus Ayres, 1855 -- valid -- showy snailfish
  Liparis rutteri (Gilbert and Snyder in Jordan and Evermann, 1898) -- valid -- ringtail snailfish
  Liparis tunicatus Reinhardt, 1836 -- valid -- Greenland seasnail, kelp snailfish, limace des laminaires
  Lipariscus nanus Gilbert, 1915 -- valid -- pygmy snailfish
  Lipogramma anabantoides Böhlke, 1960 -- valid -- dusky basslet, spotfin basslet
  Lipogramma evides Robins and Colin, 1979 -- valid -- banded basslet, cabrilleta cinteada
  Lipogramma trilineatum Randall, 1963 -- valid -- cabrilleta tres rayas, threeline basslet
  Lobotes pacificus Gilbert in Jordan and Evermann, 1898 -- valid -- dormilona del Pacífico, Pacific tripletail, west coast tripletail, West Coast tripletail
  Lobotes surinamensis (Bloch, 1790) -- valid -- Atlantic tripletail, biajaca de mar, dormilona del Atlántico, tripletail
  Lobotidae -- valid -- croupias, dormilonas, flashers, tripletails
  Lonchopisthus micrognathus (Poey, 1860) -- valid -- bocón rayado, guardian lanceolado, swordtail jawfish
  Lonchopisthus sinuscalifornicus Castro-Aguirre and Villavicencio-Garayzar, 1988 -- valid -- bocón cola larga, longtail jawfish
  Lophiidae -- valid -- anglerfishes, baudroies, goosefishes, monkfishes, rapes pescadores
  Lophiiformes -- valid -- anglerfishes, baudroies
  Lophiodes caulinaris (Garman, 1899) -- valid -- rape rabo manchado, spottedtail goosefish
  Lophiodes reticulatus Caruso and Suttkus, 1979 -- valid -- rape hocicón, reticulate goosefish
  Lophiodes spilurus (Garman, 1899) -- valid -- rape de hebra, threadfin goosefish
  Lophius americanus Valenciennes in Cuvier and Valenciennes, 1837 -- valid -- baudroie d'Amérique, goosefish, monkfish
  Lophius gastrophysus Miranda Ribeiro, 1915 -- valid -- blackfin goosefish, rape pescador
  Lophogobius cyprinoides (Pallas, 1770) -- valid -- crested goby, gobio encrestado, gobio gallo
  Lopholatilus chamaeleonticeps Goode and Bean, 1879 -- valid -- blue tilefish, conejo amarillo, tilefish
  Lophotidae -- valid -- crestfishes, peces flecos, poissons crêtés
  Lophotus capellei Temminck and Schlegel, 1845 -- valid -- crestfish, North Pacific crestfish
  Lophotus lacepede Giorna, 1809 -- valid -- crestfish, fleco de gallo
  Loricariidae Rafinesque, 1815 -- valid -- armored catfishes, loricariidés, plecóstomas, suckermouth armored catfishes, suckermouth catfishes
  Lota lota (Linnaeus, 1758) -- valid -- burbot, eelpout, lotte
  Lucania goodei Jordan, 1880 -- valid -- blue-fintop minnow, bluefin killifish
  Lucania interioris Hubbs and Miller, 1965 -- valid -- Cuatro Cienegas killifish, Cuatrocienegas killifish, sardinilla de Cuatro Ciénegas
  Lucania parva (Baird and Girard in Girard, 1855) -- valid -- rainwater killifish, sardinilla de lluvia
  Lumpenella longirostris (Evermann and Goldsborough, 1907) -- valid -- longsnout prickleback
  Lumpenus fabricii Reinhardt, 1836 -- valid -- lompénie élancée, slender eelblenny
  Lumpenus lampretaeformis (Walbaum, 1792) -- valid -- lompénie-serpent, serpent blenny, snakeblenny
  Lumpenus sagitta Wilimovsky, 1956 -- valid -- snake prickleback
  Lupinoblennius nicholsi (Tavolga, 1954) -- valid -- borracho aletón, highfin blenny
  Lupinoblennius vinctus (Poey, 1867) -- valid -- blenio de mangle, mangrove blenny
  Lutjanidae -- valid -- fusiliers, pargos y huachinangos, perches de mer, sea perches, snappers, vivaneaux
  Lutjanus analis (Cuvier in Cuvier and Valenciennes, 1828) -- valid -- mutton snapper, pargo criollo
  Lutjanus apodus (Walbaum, 1792) -- valid -- cají, pargo canchix, schoolmaster, schoolmaster snapper
  Lutjanus aratus (Günther, 1864) -- valid -- mullet snapper, pargo raicero
  Lutjanus argentiventris (Peters, 1869) -- valid -- amarillo snapper, pargo amarillo, yellow snapper, yellowtail snapper
  Lutjanus buccanella (Cuvier in Cuvier and Valenciennes, 1828) -- valid -- blackfin snapper, pargo sesí
  Lutjanus campechanus (Poey, 1860) -- valid -- huachinango del Golfo, northern red snapper, pargo colorado, red snapper
  Lutjanus colorado Jordan and Gilbert, 1882 -- valid -- colorado snapper, pargo colorado
  Lutjanus cyanopterus (Cuvier in Cuvier and Valenciennes, 1828) -- valid -- cubera, cubera snapper, pargo cubera
  Lutjanus griseus (Linnaeus, 1758) -- valid -- caballerete, gray snapper, grey snapper, pargo mulato
  Lutjanus guttatus (Steindachner, 1869) -- valid -- mutton snapper, pargo lunarejo, spotted rose snapper
  Lutjanus inermis (Peters, 1869) -- valid -- golden snapper, Pacific rabirubia, pargo rabirrubia
  Lutjanus jocu (Bloch and Schneider, 1801) -- valid -- dog snapper, jocú, pargo caballera
  Lutjanus jordani (Gilbert in Jordan and Evermann, 1898) -- valid -- Jordan's snapper, pargo colmillón, whipper snapper
  Lutjanus mahogoni (Cuvier in Cuvier and Valenciennes, 1828) -- valid -- mahogany snapper, ojanco, pargo ojón
  Lutjanus novemfasciatus Gill, 1862 -- valid -- black snapper, dog snapper, Pacific dog snapper, pargo prieto
  Lutjanus peru (Nichols and Murphy, 1922) -- valid -- huachinango del Pacífico, Pacific red snapper
  Lutjanus purpureus (Poey, 1866) -- valid -- Caribbean red snapper, pargo rojo, southern red snapper
  Lutjanus synagris (Linnaeus, 1758) -- valid -- biajaiba, lane snapper, pargo biajaiba
  Lutjanus viridis (Valenciennes, 1846) -- valid -- blue and gold snapper, blue-and-gold snapper, pargo azul-dorado
  Lutjanus vivanus (Cuvier in Cuvier and Valenciennes, 1828) -- valid -- huachinango ojo amarillo, pargo del alto, silk snapper
  Luvaridae -- valid -- emperadores, louvars, louvereaux, Luvarsus fishes
  Luvarus imperialis Rafinesque, 1810 -- valid -- emperador, louvar
  Luxilus albeolus (Jordan, 1889) -- valid -- white shiner
  Luxilus cardinalis (Mayden, 1988) -- valid -- cardinal shiner
  Luxilus cerasinus (Cope, 1868) -- valid -- crescent shiner
  Luxilus chrysocephalus Rafinesque, 1820 -- valid -- striped shiner
  Luxilus coccogenis (Cope, 1868) -- valid -- warpaint shiner
  Luxilus cornutus (Mitchill, 1817) -- valid -- common shiner, méné à nageoires rouges
  Luxilus pilsbryi (Fowler, 1904) -- valid -- duskystripe shiner
  Luxilus zonatus (Putnam, 1863) -- valid -- bleeding shiner
  Luxilus zonistius Jordan, 1880 -- valid -- bandfin shiner
  Lycenchelys paxillus (Goode and Bean, 1879) -- valid -- common wolf eel, lycode commun
  Lycenchelys verrillii (Goode and Bean, 1877) -- valid -- wolf eelpout
  Lycodapus fierasfer Gilbert, 1890 -- valid -- blackmouth eelpout
  Lycodapus mandibularis Gilbert, 1915 -- valid -- pallid eelpout
  Lycodapus parviceps Gilbert, 1896 -- valid -- smallhead eelpout
  Lycodapus psarostomatus Peden and Anderson, 1981 -- valid -- specklemouth eelpout
  Lycodes brevipes Bean, 1890 -- valid -- shortfin eelpout
  Lycodes concolor Gill and Townsend, 1897 -- valid -- ebony eelpout
  Lycodes cortezianus (Gilbert, 1890) -- valid -- bigfin eelpout
  Lycodes diapterus Gilbert, 1892 -- valid -- black eelpout
  Lycodes esmarkii Collett, 1875 -- valid -- Esmark's eelpout, greater eelpout, lycode d'Esmark
  Lycodes fasciatus (Schmidt, 1904) -- valid -- banded eelpout
  Lycodes jugoricus Knipowitsch, 1906 -- valid -- shulupaoluk
  Lycodes lavalaei Vladykov and Tremblay, 1936 -- valid -- lycode du Labrador, Newfoundland eelpout
  Lycodes mucosus Richardson, 1855 -- valid -- saddled eelpout
  Lycodes pacificus Collett, 1879 -- valid -- blackbelly eelpout, viruela panza negra
  Lycodes palearis Gilbert, 1896 -- valid -- wattled eelpout
  Lycodes pallidus Collett, 1879 -- valid -- lycode pâle, pale eelpout
  Lycodes polaris (Sabine, 1824) -- valid -- Canadian eelpout, lycode polaire
  Lycodes raridens Taranetz and Andriashev in Andriashev, 1937 -- valid -- marbled eelpout, sparse-toothed lycod
  Lycodes reticulatus Reinhardt, 1835 -- valid -- Arctic eelpout, lycode arctique
  Lycodes rossi Malmgren, 1865 -- valid -- threespot eelpout
  Lycodes turneri Bean, 1879 -- valid -- polar eelpout
  Lycodes vahlii Reinhardt, 1831 -- valid -- checker eelpout, lycode à carreaux, Vahl's eelpout
  Lyconema barbatum Gilbert, 1896 -- valid -- bearded eelpout, viruela barbona
  Lyopsetta exilis (Jordan & Gilbert, 1880) -- valid -- platija flaca, plie mince, Slender Sole, slender sole
  Lythrurus alegnotus (Snelson, 1972) -- valid -- Warrior shiner
  Lythrurus ardens (Cope, 1868) -- valid -- rosefin shiner
  Lythrurus atrapiculus (Snelson, 1972) -- valid -- blacktip shiner
  Lythrurus bellus (Hay, 1881) -- valid -- pretty shiner
  Lythrurus fasciolaris (Gilbert, 1891) -- valid -- scarlet shiner, scarletfin shiner
  Lythrurus fumeus (Evermann, 1892) -- valid -- ribbon shiner
  Lythrurus lirus (Jordan, 1877) -- valid -- mountain shiner
  Lythrurus matutinus (Cope, 1870) -- valid -- pinewood shiner, pinewoods shiner
  Lythrurus roseipinnis (Hay in Jordan, 1885) -- valid -- cherryfin shiner
  Lythrurus snelsoni (Robison, 1985) -- valid -- Ouachita Mountain shiner, Ouachita shiner
  Lythrurus umbratilis (Girard, 1856) -- valid -- redfin shiner
  Lythrypnus dalli (Gilbert, 1890) -- valid -- bluebanded goby, gobio bonito
  Lythrypnus elasson Böhlke and Robins, 1960 -- valid -- dwarf goby, gobio enano
  Lythrypnus insularis Bussing, 1990 -- valid -- distant goby, gobio isleño
  Lythrypnus nesiotes Böhlke and Robins, 1960 -- valid -- gobio insular, gobio isla, island goby
  Lythrypnus phorellus Böhlke and Robins, 1960 -- valid -- convict goby, gobio reo
  Lythrypnus pulchellus Ginsburg, 1938 -- valid -- gobio coquetón, gorgeous goby
  Lythrypnus rhizophora (Heller and Snodgrass, 1903) -- valid -- gobio ligero, spottedcheek goby
  Lythrypnus spilus Böhlke and Robins, 1960 -- valid -- bluegold goby, gobio marcado
  Lythrypnus zebra (Gilbert, 1890) -- valid -- gobio cebra, zebra goby
  Macrhybopsis aestivalis (Girard, 1856) -- valid -- carpa pecosa, speckled chub
  Macrhybopsis australis (Hubbs and Ortenburger, 1929) -- valid -- prairie chub, Red River chub
  Macrhybopsis gelida (Girard, 1856) -- valid -- sicklefin chub, sturgeon chub
  Macrhybopsis hyostoma (Gilbert, 1884) -- valid -- central chub, shoal chub
  Macrhybopsis marconis (Jordan and Gilbert, 1886) -- valid -- burrhead chub, Guadaloupe chub
  Macrhybopsis meeki (Jordan and Evermann, 1896) -- valid -- sicklefin chub, sturgeon chub
  Macrhybopsis storeriana (Kirtland, 1845) -- valid -- silver chub
  Macrhybopsis tetranema (Gilbert, 1886) -- valid -- Arkansas chub, Arkansas River speckled chub, Canadian Speckled Chub, peppered chub
  Macropinna microstoma Chapman, 1939 -- valid -- barreleye
  Macroramphosidae -- valid -- bécasses de mer, snipefishes, trompeteros
  Macroramphosus gracilis (Lowe, 1839) -- valid -- slender snipefish, tirador alargado, trompetero flaco
  Macroramphosus scolopax (Linnaeus, 1758) -- valid -- longspine snipefish, trompetero copete
  Macrouridae Gilbert and Hubbs, 1916 -- valid -- granaderos, grenadiers, grenadiers, marcrouridés, rattails
  Macrourus berglax Lacepède, 1801 -- valid -- grenadier berglax, onion-eye grenadier, roughhead grenadier, smoothspined grenadier
  Magnisudis atlantica (Krøyer, 1868) -- valid -- barracudina pequeña, barracudina pico de pato, duckbill barracudina
  Makaira indica (Cuvier in Cuvier and Valenciennes, 1832) -- invalid -- black marlin, giant black marlin, marlin negro, Pacific black marlin, silver marlin
  Makaira mazara (Jordan and Snyder, 1901) -- invalid -- black spearfish, Indo-Pacific blue marlin, marlin azul del Indo-Pacífico, Pacific blue marlin
  Makaira nigricans Lacepède, 1802 -- valid -- Atlantic blue marlin, blue marlin, castero, Cuban black marlin, marlin azul
  Malacanthidae -- valid -- blanquillos, tilefishes, tiles
  Malacanthus plumieri (Bloch, 1786) -- valid -- matajuelo blanco, matejuelo blanco, sand tilefish
  Malacocephalus occidentalis Goode and Bean, 1885 -- valid -- American straptail grenadier, granadero carapacho, western softhead grenadier
  Malacocottus kincaidi Gilbert and Thompson, 1905 -- valid -- blackfin sculpin
  Malacocottus zonurus Bean, 1890 -- valid -- darkfin sculpin
  Malacoctenus aurolineatus Smith, 1957 -- valid -- goldline blenny, sapito lincado, trambollo lineado
  Malacoctenus boehlkei Springer, 1959 -- valid -- diamond blenny, diamond blenny, trambollo diamantino
  Malacoctenus ebisui Springer, 1959 -- valid -- fishgod blenny, trambollo dorado
  Malacoctenus erdmani Smith, 1957 -- valid -- imitator blenny, imitator blenny, sapito imitador, trambollo imitador
  Malacoctenus gigas Springer, 1959 -- valid -- Sonora blenny, trambollo de Sonora
  Malacoctenus gilli (Steindachner, 1867) -- valid -- dusky blenny, dusky blenny, sapito pardo, trambollo pardo
  Malacoctenus hubbsi Springer, 1959 -- valid -- redside blenny, trambollo rojo
  Malacoctenus macropus (Poey, 1868) -- valid -- rosy blenny, sapito rosado, trambollo rosado
  Malacoctenus margaritae (Fowler, 1944) -- valid -- margarita blenny, trambollo margarita
  Malacoctenus tetranemus (Cope, 1877) -- valid -- throatspotted blenny, trambollo pintado
  Malacoctenus triangulatus Springer, 1959 -- valid -- saddle blenny, saddled blenny, sapito de inontura, trambollo ensillado
  Malacoctenus versicolor (Poey, 1876) -- valid -- barfin blenny, barfin blenny, sapito multicolor, trambollo multicolor
  Malacoctenus zacae Springer, 1959 -- valid -- trambollo aletiamarilla, Zaca blenny
  Malacoctenus zonifer (Jordan and Gilbert, 1882) -- valid -- glossy blenny, trambollo brilloso
  Malacoraja senta (Garman, 1885) -- valid -- raie à queue de velours, smooth skate
  Mallotus villosus (Müller, 1776) -- valid -- capelan, capelin
  Manta birostris (Walbaum, 1792) -- valid -- Atlantic manta, giant manta, manta, manta gigante, Pacific manta
  Margariscus margarita (Cope, 1867) -- valid -- mulet perlé, pearl dace
  Margariscus nachtriebi (Cox, 1896) -- valid -- northern pearl dace
  Maurolicus weitzmani Parin and Kobyliansky, 1993 -- valid -- Atlantic pearlside, luciérnaga perlada, pearlside, pearlsides, Weitzman's pearlside
  Meda fulgida Girard, 1856 -- valid -- spikedace
  Medialuna californiensis (Steindachner, 1876) -- valid -- chopa medialuna, halfmoon
  Megachasma pelagios Taylor, Compagno and Struhsaker, 1983 -- valid -- megamouth shark, tiburón bocón
  Megachasmidae Taylor, Compagno and Struhsaker, 1983 -- valid -- megamouth sharks, requins à grande gueule, tiburones bocones
  Megalocottus platycephalus (Pallas, 1814) -- valid -- belligerent sculpin
  Megalopidae -- valid -- sábalos, tarpons, tarpons
  Megalops atlanticus Valenciennes in Cuvier and Valenciennes, 1847 -- valid -- sábalo, tarpon
  Megupsilon aporus Miller and Walters, 1972 -- valid -- cachorrito enano de Potosí, Catarina pupfish
  Melanogrammus aeglefinus (Linnaeus, 1758) -- valid -- aiglefin, haddock
  Melanorhinus cyanellus (Meek and Hildebrand, 1923) -- valid -- blackback silverside, pejerrey azulado
  Melanostigma atlanticum Koefoed, 1952 -- valid -- Atlantic soft pout, mollasse atlantique
  Melanostigma pammelas Gilbert, 1896 -- valid -- black eelpout, black eelpout, midwater eelpout, viruela carbonera
  Melichthys niger (Bloch, 1786) -- valid -- black durgon, black triggerfish, cochito negro, negrito
  Membras gilberti (Jordan and Bollman, 1890) -- valid -- landia silverside, pejerrey landia
  Membras martinica (Valenciennes in Cuvier and Valenciennes, 1835) -- valid -- pejerrey rasposo, rough silverside
  Menidia audens Hay, 1882 -- invalid -- mississippi silverside, Mississippi silverside
  Menidia beryllina (Cope, 1867) -- valid -- inland silverside, plateadito salado, tidewater silverside
  Menidia clarkhubbsi Echelle and Mosier, 1982 -- valid -- Texas silverside
  Menidia colei Hubbs, 1936 -- valid -- golden silverside, plateadito de Progreso
  Menidia conchorum Hildebrand and Ginsburg, 1927 -- valid -- key silverside
  Menidia extensa Hubbs and Raney, 1946 -- valid -- Waccamaw silverside
  Menidia menidia (Linnaeus, 1766) -- valid -- Atlantic silverside, capucette
  Menidia peninsulae (Goode and Bean, 1879) -- valid -- plateadito playero, tidewater silverside
  Menticirrhus americanus (Linnaeus, 1758) -- valid -- berrugato zorro, jewsharp drummer, southern kingfish
  Menticirrhus elongatus (Günther, 1864) -- valid -- berrugato fino, slender kingfish, verrugata, verrugata
  Menticirrhus littoralis (Holbrook, 1847) -- valid -- berrugato del Golfo, Gulf kingfish
  Menticirrhus nasus (Günther, 1868) -- valid -- berrugato real, highfin kingfish
  Menticirrhus paitensis Hildebrand, 1946 -- valid -- berrugato chulo, Paita kingfish
  Menticirrhus panamensis (Steindachner, 1877) -- valid -- berrugato panameño, Panama kingfish
  Menticirrhus saxatilis (Bloch and Schneider, 1801) -- valid -- berrugato ratón, Gulf minkfish, northern kingfish
  Menticirrhus undulatus (Girard, 1854) -- valid -- berrugato californiano, California corbina, California whiting
  Merlucciidae Gill, 1884 -- valid -- hakes, merluccid hakes, merlucciid hakes, merlus, merluzas
  Merluccius albidus (Mitchill, 1818) -- valid -- offshore hake, offshore whiting
  Merluccius angustimanus Garman, 1899 -- valid -- merluza panameña, Panama hake
  Merluccius bilinearis (Mitchill, 1814) -- valid -- merlu argenté, silver hake
  Merluccius hernandezi Mathews, 1985 -- valid -- Cortez hake, merluza de Cortés
  Merluccius productus (Ayres, 1855) -- valid -- merluza norteña, North Pacific hake, Pacific hake, Pacific whiting, whiting
  Microcottus sellaris (Gilbert, 1896) -- valid -- brightbelly sculpin
  Microdesmidae -- valid -- dartfishes, peces lombriz, poissons-lombrics, wormfishes
  Microdesmus affinis Meek and Hildebrand, 1928 -- valid -- olivaceous wormfish, pez lombriz oliváceo
  Microdesmus carri Gilbert, 1966 -- valid -- pez lombriz punteado, stippled wormfish
  Microdesmus dipus Günther, 1864 -- valid -- banded wormfish, pez lombriz rayado
  Microdesmus dorsipunctatus Dawson, 1968 -- valid -- pez lombriz lomo punteado, spotback wormfish
  Microdesmus lanceolatus Dawson, 1962 -- valid -- lancetail wormfish
  Microdesmus longipinnis (Weymouth, 1910) -- valid -- pink wormfish
  Microdesmus retropinnis Jordan and Gilbert, 1882 -- valid -- pez lombriz aletatrasera, rearfin wormfish
  Microdesmus suttkusi Gilbert, 1966 -- valid -- pez lombriz manchado, spotside wormfish
  Microgadus proximus (Girard, 1854) -- valid -- Pacific tomcod
  Microgadus tomcod (Walbaum, 1792) -- valid -- Atlantic tomcod, frostfish, poulamon atlantique
  Microgobius brevispinis Ginsburg, 1939 -- valid -- Balboa goby, gobio de Balboa
  Microgobius carri Fowler, 1945 -- valid -- Seminole goby
  Microgobius cyclolepis Gilbert, 1890 -- valid -- gobio escamas redondas, roundscale goby
  Microgobius emblematicus (Jordan and Gilbert, 1882) -- valid -- emblem goby, gobio emblema
  Microgobius erectus Ginsburg, 1938 -- valid -- erect goby, gobio chato
  Microgobius gulosus (Girard, 1858) -- valid -- clown goby, gobio payaso
  Microgobius microlepis Longley and Hildebrand, 1940 -- valid -- banner goby, gobio bandera
  Microgobius miraflorensis Gilbert and Starks, 1904 -- valid -- gobio de Miraflores, Miraflores goby
  Microgobius tabogensis Meek and Hildebrand, 1928 -- valid -- gobio de Taboga, Taboga goby
  Microgobius thalassinus (Jordan and Gilbert, 1883) -- valid -- green goby
  Microlepidotus brevipinnis (Steindachner, 1869) -- valid -- brassy grunt, ronco bronceado
  Microlepidotus inornatus Gill, 1862 -- valid -- ronco rayadillo, wavyline grunt
  Micromesistius poutassou (Risso, 1827) -- valid -- blue whiting, Couch's whiting, poutassou, putassu
  Micrometrus aurora (Jordan and Gilbert, 1880) -- valid -- mojarra de arrecife, reef perch
  Micrometrus minimus (Gibbons, 1854) -- valid -- dwarf perch, mojarra enana
  Microphis brachyurus (Bleeker, 1853) -- valid -- opossum pipefish, pez pipa culebra, shorttailed pipefish, trompetero colinegro
  Micropogonias altipinnis (Günther, 1864) -- valid -- chano sureño, golden croaker
  Micropogonias ectenes (Jordan and Gilbert, 1882) -- valid -- chano mexicano, slender croaker
  Micropogonias megalops (Gilbert, 1890) -- valid -- chano norteño, Gulf croaker
  Micropogonias undulatus (Linnaeus, 1766) -- valid -- Atlantic croaker, gurrubata, roncadina
  Micropterus cataractae Williams and Burgess, 1999 -- valid -- shoal bass
  Micropterus coosae Hubbs and Bailey, 1940 -- valid -- redeye bass
  Micropterus dolomieu Lacepède, 1802 -- valid -- achigan à petite bouche, smallmouth bass
  Micropterus notius Bailey and Hubbs, 1949 -- valid -- Suwannee bass
  Micropterus punctulatus (Rafinesque, 1819) -- valid -- spotted bass
  Micropterus salmoides (Lacepède, 1802) -- valid -- achigan à grande bouche, largemouth bass, lobina negra
  Micropterus treculii (Vaillant and Bocourt, 1874) -- valid -- Guadaloupe bass, Guadalupe bass
  Microspathodon bairdii (Gill, 1862) -- valid -- bumphead damselfish, jaqueta vistosa
  Microspathodon chrysurus (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- chopita de cola amarilla, jaqueta coliamarilla, yellowtail damselfish
  Microspathodon dorsalis (Gill, 1862) -- valid -- giant damselfish, jaqueta gigante
  Microstomus pacificus (Lockington, 1879) -- valid -- Dover sole, Dover Sole, limande-sole, platija resbalosa
  Millerichthys robustus (Miller and Hubbs, 1974) -- valid -- almirante mexicano, Mexican rivulus
  Minytrema melanops (Rafinesque, 1820) -- valid -- spotted sucker
  Misgurnus anguillicaudatus (Cantor, 1842) -- valid -- dojo, Japanese weatherfish, oriental weatherfish
  Mitsukurina owstoni Jordan, 1898 -- valid -- goblin shark
  Mitsukurinidae Jordan, 1898 -- valid -- goblin sharks, requins-lutins, tiburones duende
  Moapa coriacea Hubbs and Miller, 1948 -- valid -- Moapa dace
  Mobula hypostoma (Bancroft, 1831) -- valid -- Atlantic devil ray, devil ray, manta del Golfo, manta enana
  Mobula japanica (Müller and Henle, 1841) -- valid -- manta arpón, spinetail mobula
  Mobula munkiana Notarbartolo-di-Sciara, 1987 -- valid -- manta chica, pygmy devil ray
  Mobula tarapacana (Philippi, 1893) -- valid -- manta cornuda, sicklefin devil ray
  Mobula thurstoni (Lloyd, 1908) -- valid -- manta doblada, smoothtail mobula
  Mobulidae Gill, 1893 -- valid -- devil rays, mantas, mantas, mantes
  Mola lanceolata (Liénard, 1840) -- invalid -- mola coliaguda, sharptail mola
  Mola mola (Linnaeus, 1758) -- valid -- mola, môle, ocean sunfish, pez luna
  Molidae -- valid -- headfishes, molas, molas, ocean sunfishes, poissons-lune, trunkfishes
  Molva molva (Linnaeus, 1758) -- valid -- drizzie, European ling, ling, ling cod, molva, sea pike
  Monacanthidae -- valid -- filefishes, lijas, poissons-bourses
  Monacanthus ciliatus (Mitchill, 1818) -- valid -- fringed filefish, lija de clavo, sobaco común
  Monacanthus tuckeri Bean, 1906 -- valid -- lija reticulada, slender filefish
  Monolene antillarum Norman, 1933 -- valid -- slim flounder, Slim Flounder
  Monolene asaedai Clark, 1936 -- invalid -- dark flounder, Dark Flounder, lenguado carbón
  Monolene dubiosa Garman, 1899 -- valid -- Acapulco flounder, Acapulco Flounder, lenguado acapulqueño
  Monolene maculipinna Garman, 1899 -- valid -- lenguado de profundidad, Pacific deepwater flounder, Pacific Deepwater Flounder
  Monolene sessilicauda Goode, 1880 -- valid -- cardeau des profondeurs, Deepwater Flounder, deepwater flounder
  Monopenchelys acuta (Parr, 1930) -- valid -- morena rubicunda, redface eel, redface moray
  Monopterus albus (Zuiew, 1793) -- valid -- Asian swamp eel, rice eel, swamp eel, white ricefield eel
  Moridae Moreau, 1881 -- valid -- carboneros, codlings, deepsea codfishes, moras, moras, moras y carboneros, morid cods, moros
  Moringua edwardsi (Jordan and Bollman, 1889) -- valid -- morenita, morenita de arena, spaghetti eel
  Moringuidae -- valid -- anguilas fideo, anguilles-spaghettis, spaghetti eels, worm eels
  Morone americana (Gmelin, 1789) -- valid -- baret, white perch
  Morone chrysops (Rafinesque, 1820) -- valid -- bar blanc, white bass
  Morone mississippiensis Jordan and Eigenmann in Eigenmann, 1887 -- valid -- yellow bass
  Morone saxatilis (Walbaum, 1792) -- valid -- bar rayé, lobina estriada, rockfish, striped bass
  Moronidae -- valid -- bars, lobinas norteñas, temperate basses
  Moxostoma albidum (Girard, 1856) -- valid -- longlip jumprock, matalote blanco
  Moxostoma anisurum (Rafinesque, 1820) -- valid -- chevalier blanc, silver redhorse
  Moxostoma ariommum Robins and Raney, 1956 -- valid -- bigeye jumprock
  Moxostoma austrinum Bean, 1880 -- valid -- matalote chuime, Mexican redhorse, west Mexican redhorse
  Moxostoma breviceps (Cope, 1870) -- valid -- hookfin redhorse, smallmouth redhorse
  Moxostoma carinatum (Cope, 1870) -- valid -- chevalier de rivière, river redhorse
  Moxostoma cervinum (Cope, 1868) -- valid -- black jumprock, blacktip jumprock
  Moxostoma collapsum (Cope, 1870) -- valid -- notchlip redhorse, piedmont redhorse, v-lip redhorse
  Moxostoma congestum (Baird and Girard, 1854) -- valid -- gray redhorse, matalote gris
  Moxostoma duquesnei (Lesueur, 1817) -- invalid -- black redhorse
  Moxostoma duquesnii (Lesueur, 1817) -- valid -- black redhorse
  Moxostoma erythrurum (Rafinesque, 1818) -- valid -- golden redhorse
  Moxostoma hubbsi Legendre, 1952 -- valid -- chevalier cuivré, copper redhorse
  Moxostoma lacerum (Jordan and Brayton, 1877) -- valid -- hairlip redhorse, harelip sucker
  Moxostoma lachneri Robins and Raney, 1956 -- valid -- greater jumprock
  Moxostoma macrolepidotum (Lesueur, 1817) -- valid -- chevalier rouge, shorthead redhorse
  Moxostoma mascotae Regan, 1907 -- valid -- Mascota jumprock, matalote de Mascota
  Moxostoma pappillosum (Cope, 1870) -- valid -- slender redhorse, suckermouth redhorse, V-lip redhorse
  Moxostoma pisolabrum Trautman and Martin, 1951 -- valid -- pealip redhorse
  Moxostoma poecilurum Jordan, 1877 -- valid -- blacktail redhorse
  Moxostoma robustum (Cope, 1870) -- valid -- robust redhorse, smallfin redhorse
  Moxostoma rupiscartes Jordan and Jenkins in Jordan, 1889 -- valid -- striped jumprock
  Moxostoma valenciennesi Jordan, 1885 -- valid -- chevalier jaune, greater redhorse
  Mugil cephalus Linnaeus, 1758 -- valid -- black mullet, gray mullet, lisa, lisa rayada, striped mullet
  Mugil curema Valenciennes in Cuvier and Valenciennes, 1836 -- valid -- lisa blanca, silver mullet, white mullet
  Mugil gyrans (Jordan and Gilbert, 1884) -- valid -- fantail mullet, lisa carrusel, whirligig mullet
  Mugil hospes Jordan and Culver in Jordan, 1895 -- valid -- hospe mullet, lisa hospe, lisita
  Mugil liza Valenciennes in Cuvier and Valenciennes, 1836 -- valid -- lebrancho, liza
  Mugil setosus Gilbert, 1892 -- valid -- lisa liseta, liseta mullet
  Mugil trichodon Poey, 1875 -- valid -- fantail mullet, lisa amarilla, lisa de abanico
  Mugilidae -- valid -- grey mullets, lisas, muges, mullets
  Mullidae -- valid -- chivos, goat fishes, goatfishes, red mullets, surmulets, surmullets
  Mulloidichthys dentatus (Gill, 1862) -- valid -- chivo barbón, Mexican goatfish
  Mulloidichthys martinicus (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- chivo amarillo, salmonete amarillo, yellow goatfish
  Mullus auratus Jordan and Gilbert, 1882 -- valid -- chivo colorado, red goatfish, salmonete rojo
  Muraena argus (Steindachner, 1870) -- valid -- Argus moray, morena Argos
  Muraena clepsydra Gilbert in Jordan and Evermann, 1898 -- valid -- hourglass moray, morena clepsidra
  Muraena lentiginosa Jenyns, 1842 -- valid -- jewel moray, morena pinta
  Muraena retifera Goode and Bean, 1882 -- valid -- morena reticulada, reticulate moray
  Muraena robusta Osório, 1911 -- valid -- stout moray
  Muraenesocidae -- valid -- congres-brochets, congrios picudos, false conger eels, pike congers
  Muraenidae -- valid -- moray eels, morays, morenas, murènes
  Mustelus californicus Gill, 1864 -- valid -- cazón mamón, gray smoothhound
  Mustelus canis (Mitchill, 1815) -- valid -- cazón dientón, dusky smooth-hound, smooth dogfish
  Mustelus dorsalis Gill, 1864 -- valid -- cazón tripa, sharptooth smooth-hound, sharptooth smoothhound
  Mustelus henlei (Gill, 1863) -- valid -- brown smoothhound, cazón hilacho
  Mustelus lunulatus Jordan and Gilbert, 1882 -- valid -- cazón segador, sicklefin smoothhound
  Mustelus norrisi Springer, 1939 -- valid -- boca dulce, cazón viuda, Florida smoothhound, narrowfin smooth-hound
  Mustelus sinusmexicanus Heemstra, 1997 -- valid -- cazón del Golfo, Gulf smoothhound
  Mycteroperca acutirostris (Valenciennes in Cuvier and Valenciennes, 1828) -- valid -- bonací rojo, cherna peineta, comb grouper, western comb grouper
  Mycteroperca bonaci (Poey, 1860) -- valid -- aguaj í, black grouper, cherna negrillo
  Mycteroperca interstitialis (Poey, 1860) -- valid -- abadejo, cherna boca amarilla, yellowmouth grouper
  Mycteroperca jordani (Jenkins and Evermann, 1889) -- valid -- baya, Gulf grouper
  Mycteroperca microlepis (Goode and Bean, 1879) -- valid -- abadejo, charcoal belly, gag
  Mycteroperca phenax Jordan and Swain, 1884 -- valid -- abadejo garropa, scamp
  Mycteroperca prionura Rosenblatt and Zahuranec, 1967 -- valid -- cabrilla chiruda, sawtail grouper
  Mycteroperca rosacea (Streets, 1877) -- valid -- cabrilla sardinera, golden grouper, leopard grouper
  Mycteroperca tigris (Valenciennes in Cuvier and Valenciennes, 1833) -- valid -- bonací gato, cabrilla gato, tiger grouper
  Mycteroperca venenosa (Linnaeus, 1758) -- valid -- arigua, guacamayo, princess rockfish, yellowfin grouper
  Mycteroperca xenarcha Jordan, 1888 -- valid -- broomtail grouper, cabrilla plomuda
  Myctophidae -- valid -- lanternfishes, linternillas, poissons-lanternes
  Myctophum affine (Lütken, 1892) -- valid -- metallic lanternfish, pez linterna
  Myctophum punctatum Rafinesque, 1810 -- valid -- lanterne ponctuée, spotted lanternfish, spotted laternfish
  Myliobatidae Bonaparte, 1838 -- valid -- águilas marinas, aigles de mer, eagle rays
  Myliobatis californica Gill, 1865 -- valid -- bat ray, tecolote
  Myliobatis freminvillei Lesueur, 1824 -- invalid -- águila naríz de vaca, bullnose ray
  Myliobatis goodei Garman, 1885 -- valid -- southern eagle ray
  Myliobatis longirostris Applegate and Fitch, 1964 -- valid -- águila picuda, longnose eagle ray
  Mylocheilus caurinus (Richardson, 1836) -- valid -- peamouth
  Mylopharodon conocephalus (Baird and Girard in Girard, 1854) -- valid -- hardhead
  Myoxocephalus aenaeus (Mitchill, 1814) -- valid -- chaboisseau bronzé, grubby, little sculpin
  Myoxocephalus jaok (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- plain sculpin
  Myoxocephalus niger (Bean, 1881) -- valid -- warthead sculpin
  Myoxocephalus octodecemspinosus (Mitchill, 1814) -- valid -- chaboisseau à dix-huit épines, gray sculpin, longhorn sculpin
  Myoxocephalus polyacanthocephalus (Pallas, 1814) -- valid -- great sculpin
  Myoxocephalus quadricornis (Linnaeus, 1758) -- valid -- chaboisseau à quatre cornes, fourhorn sculpin
  Myoxocephalus scorpioides (Fabricius, 1780) -- valid -- Arctic sculpin, chaboisseau arctique
  Myoxocephalus scorpius (Linnaeus, 1758) -- valid -- chaboisseau à épines courtes, shorthorn sculpin
  Myoxocephalus stelleri Tilesius, 1811 -- valid -- frog sculpin, Steller's sculpin
  Myoxocephalus thompsonii (Girard, 1851) -- valid -- chabot de profondeur, deepwater sculpin
  Myoxocephalus verrucosus (Bean, 1881) -- valid -- warty sculpin
  Myrichthys aspetocheiros McCosker and Rosenblatt, 1993 -- valid -- longfin spotted snake eel, tieso aletón
  Myrichthys breviceps (Richardson, 1848) -- valid -- safío de manchas blancas, sharptail eel, tieso afilado
  Myrichthys ocellatus (Lesueur, 1825) -- valid -- goldspotted eel, palespotted eel, safío ocelado, tieso manchas doradas
  Myrichthys pantostigmius Jordan and McGregor in Jordan and Evermann, 1898 -- valid -- Clarion snake eel, tieso manchado de Clarión
  Myrichthys tigrinus Girard, 1859 -- valid -- tieso tigre, tiger snake eel
  Myripristis berndti Jordan and Evermann, 1903 -- valid -- bigscale soldierfish, soldado azotado
  Myripristis clarionensis Gilbert, 1897 -- valid -- soldado amarillo, yellow soldierfish
  Myripristis jacobus Cuvier in Cuvier and Valenciennes, 1829 -- valid -- blackbar soldierfish, candil barreado, soldado raya negra
  Myripristis leiognathus Valenciennes, 1846 -- valid -- Pacific soldierfish, Panamic soldierfish, soldado panámico
  Myrophis platyrhynchus Breder, 1927 -- valid -- broadnose worm eel, tieso chato
  Myrophis punctatus Lütken, 1852 -- valid -- safío pecoso, speckled worm eel, tieso gusano
  Myrophis vafer Jordan and Gilbert, 1883 -- valid -- Pacific worm eel, tieso lombriz
  Myxine glutinosa Linnaeus, 1758 -- valid -- Atlantic hagfish, myxine du nord
  Myxini -- valid -- hagfishes
  Myxinidae -- valid -- brujas, hagfishes, myxines
  Myxodagnus macrognathus Hildebrand, 1946 -- valid -- longjaw stargazer, miraestrellas bocona
  Myxodagnus opercularis Gill, 1861 -- valid -- dart stargazer, miraestrellas virote
  Nannobrachium regale (Gilbert, 1892) -- valid -- linternilla puntita, pinpoint lampfish
  Narcine bancroftii (Griffith and Smith, 1834) -- valid -- lesser electric ray, raya eléctrica torpedo
  Narcine vermiculatus Breder, 1928 -- valid -- raya eléctrica rayada, vermiculate electric ray
  Narcinidae Gill, 1862 -- valid -- electric rays, narcinidés, numbfishes, rayas eléctricas
  Nasolamia velox (Gilbert in Jordan and Evermann, 1898) -- valid -- tiburón coyotito, whitenose shark
  Naucrates ductor (Linnaeus, 1758) -- valid -- pez piloto, pilotfish, piloto
  Nautichthys oculofasciatus (Girard, 1858) -- valid -- sailfin sculpin
  Nautichthys pribilovius (Jordan and Gilbert in Jordan and Evermann, 1898) -- valid -- eyeshade sculpin
  Nautichthys robustus Peden, 1970 -- valid -- shortmast sculpin
  Nealotus tripes Johnson, 1865 -- valid -- black snake mackerel, dómine negro, escolar listado
  Nebris occidentalis Vaillant, 1897 -- valid -- corvina guavina, guavina, guavina, Pacific smalleye croaker
  Nectoliparis pelagicus Gilbert and Burke, 1912 -- valid -- tadpole snailfish
  Negaprion brevirostris (Poey, 1868) -- valid -- galano de ley, lemon shark, tiburón limón
  Nemaclinus atelestos Böhlke and Springer, 1975 -- valid -- threadfin blenny
  Nematistiidae -- valid -- papagallos, plumières, roosterfish, roosterfishes
  Nematistius pectoralis Gill, 1862 -- valid -- papagallo, roosterfish
  Nemichthyidae -- valid -- anguilas tijera, poissons-avocettes, snipe eels
  Nemichthys scolopaceus Richardson, 1848 -- valid -- Atlantic snipe eel, slender snipe eel, tijera esbelta
  Neobythites gilli Goode and Bean, 1885 -- valid -- brótula amarillenta, twospot brotula
  Neobythites marginatus Goode and Bean, 1886 -- valid -- stripefin brotula
  Neobythites stelliferoides Gilbert, 1890 -- valid -- brótula de hebra, thread brotula
  Neoclinus blanchardi Girard, 1858 -- valid -- sarcastic fringehead, tubícola chusco
  Neoclinus stephensae Hubbs, 1953 -- valid -- tubícola aletiamarilla, yellowfin fringehead
  Neoclinus uninotatus Hubbs, 1953 -- valid -- onespot fringehead, tubícola mancha singular
  Neoconger mucronatus Girard, 1858 -- valid -- anguila fideo aquillada, morenita acanalada, ridged eel
  Neoepinnula americana (Grey, 1953) -- valid -- American sackfish, escolar americano
  Neogobius melanostomus (Pallas, 1814) -- valid -- gobie à taches noires, round goby
  Neomerinthe hemingwayi Fowler, 1935 -- valid -- rascacio mejilla espinosa, spinycheek scorpionfish
  Neoniphon marianus (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- carajuelo mariano, longjaw squirrelfish, longspine squirrelfish
  Neoopisthopterus tropicus (Hildebrand, 1946) -- valid -- sardinela pelada, tropical longfin herring
  Nes longus (Nichols, 1914) -- valid -- gobio camaronícola, gobio de manchas naranja, orangespotted goby
  Nesiarchus nasutus Johnson, 1862 -- valid -- black gemfish, dómine narizón, escolar narigudo, violet snake mackerel
  Nettastomatidae -- valid -- anguilles à bec de canard, duckbill eels, serpentinas
  Nettenchelys pygmaea Smith and Böhlke in Smith, Böhlke and Castle, 1981 -- valid -- pygmy pikeconger, serpentina enana
  Nezumia bairdii (Goode and Bean, 1877) -- valid -- common grenadier, granadero narizón, grenadier du Grand Banc, marlin-spike, marlin-spike grenadier, rat-tail
  Nezumia sclerorhynchus (Valenciennes, 1838) -- valid -- bluntsnout grenadier, roughtip grenadier
  Nezumia stelgidolepis (Gilbert, 1890) -- valid -- California grenadier
  Nicholsina denticulata (Evermann and Radcliff, 1917) -- valid -- loosetooth parrotfish, pococho beriquete
  Nicholsina usta (Valenciennes in Cuvier and Valenciennes, 1840) -- valid -- emerald parrotfish, loro esmeralda
  Nocomis asper Lachner and Jenkins, 1971 -- valid -- redspot chub
  Nocomis biguttatus (Kirtland, 1840) -- valid -- hornyhead chub
  Nocomis effusus Lachner and Jenkins, 1967 -- valid -- redtail chub
  Nocomis leptocephalus (Girard, 1856) -- valid -- bluehead chub
  Nocomis micropogon (Cope, 1865) -- valid -- river chub
  Nocomis platyrhynchus Lachner and Jenkins, 1971 -- valid -- bigmouth chub
  Nocomis raneyi Lachner and Jenkins, 1971 -- valid -- bull chub
  Nomeidae -- valid -- derivantes, driftfishes, man-of-war fishes, physaliers, shepherdfishes
  Nomeus gronovii (Gmelin, 1789) -- valid -- derivante fragata portuguesa, man-of-war fish, pastorcillo
  Notacanthidae -- valid -- anguilas espinosas, poissons-tapirs à épines, spiny eels
  Notacanthus chemnitzii Bloch, 1788 -- valid -- snubnosed spiny eel, spiny eel
  Notemigonus crysoleucas (Mitchill, 1814) -- valid -- golden shiner, méné jaune
  Notopteridae -- valid -- cuchillos de pluma, featherbacks, featherfin knifefishes, knifefishes, poissons-couteaux à nageoire plumeuse
  Notorynchus cepedianus (Péron, 1807) -- valid -- bluntnose sevengill shark, broadnose sevengill shark, sevengill shark, tiburón pinto
  Notoscopelus resplendens (Richardson, 1845) -- valid -- linternilla brillante, patchwork lampfish
  Notropis aguirrepequenoi Contreras-Balderas and Rivera-Teillery, 1973 -- valid -- carpita del Pilón, Soto la Marina shiner
  Notropis albizonatus Warren and Burr in Warren, Burr and Grady, 1994 -- valid -- Palezone shiner
  Notropis alborus Hubbs and Raney, 1947 -- valid -- whitemouth shiner
  Notropis altipinnis (Cope, 1870) -- valid -- highfin shiner
  Notropis amabilis (Girard, 1856) -- valid -- carpita texana, Texas shiner
  Notropis amecae Chernoff and Miller, 1986 -- valid -- Ameca shiner, carpita del Ameca
  Notropis ammophilus Suttkus and Boschung, 1990 -- valid -- orangefin shiner
  Notropis amoenus (Abbott, 1874) -- valid -- comely shiner
  Notropis anogenus Forbes, 1885 -- valid -- pugnose shiner
  Notropis ariommus (Cope, 1867) -- valid -- popeye shiner
  Notropis asperifrons Suttkus and Raney, 1955 -- valid -- burrhead shiner
  Notropis atherinoides Rafinesque, 1818 -- valid -- emerald shiner, méné émeraude
  Notropis atrocaudalis Evermann, 1892 -- valid -- blackspot shiner
  Notropis aulidion Chernoff and Miller, 1986 -- valid -- carpita de Durango, Durango shiner
  Notropis baileyi Suttkus and Raney, 1955 -- valid -- rough shiner
  Notropis bairdi Hubbs and Ortenburger, 1929 -- valid -- Red River shiner
  Notropis bifrenatus (Cope, 1867) -- valid -- bridle shiner, méné d'herbe
  Notropis blennius (Girard, 1856) -- valid -- river shiner
  Notropis boops Gilbert, 1884 -- valid -- bigeye shiner
  Notropis boucardi (Günther, 1868) -- invalid -- Balsas shiner, carpita del Balsas
  Notropis braytoni Jordan and Evermann, 1896 -- valid -- carpita tamaulipeca, Tamaulipas shiner
  Notropis buccatus (Cope, 1865) -- valid -- silverjaw minnow
  Notropis buccula Cross, 1953 -- valid -- smalleye shiner
  Notropis buchanani Meek, 1896 -- valid -- carpita fantasma, ghost shiner
  Notropis cahabae Mayden and Kuhajda, 1989 -- valid -- Cahaba shiner
  Notropis calientis Jordan and Snyder, 1899 -- valid -- carpita amarilla, yellow shiner
  Notropis candidus Suttkus, 1980 -- valid -- silverside shiner
  Notropis chalybaeus (Cope, 1867) -- valid -- ironcolor shiner
  Notropis chihuahua Woolman, 1892 -- valid -- carpita chihuahuense, Chihuahua shiner
  Notropis chiliticus (Cope, 1870) -- valid -- redlip shiner
  Notropis chlorocephalus (Cope, 1870) -- valid -- greenhead shiner
  Notropis chrosomus (Jordan, 1877) -- valid -- rainbow shiner
  Notropis cumingii (Günther, 1868) -- valid -- Atoyac chub, carpita del Atoyac
  Notropis cummingsae Myers, 1925 -- valid -- dusky shiner
  Notropis dorsalis (Agassiz, 1854) -- invalid -- bigmouth shiner
  Notropis edwardraneyi Suttkus and Clemmer, 1968 -- valid -- fluvial shiner
  Notropis girardi Hubbs and Ortenburger, 1929 -- valid -- Arkansas River shiner
  Notropis greenei Hubbs and Ortenburger, 1929 -- valid -- wedgespot shiner
  Notropis harperi Fowler, 1941 -- valid -- redeye chub, redeye shiner
  Notropis heterodon (Cope, 1865) -- valid -- blackchin shiner, menton noir
  Notropis heterolepis Eigenmann and Eigenmann, 1893 -- valid -- blacknose shiner, museau noir
  Notropis hudsonius (Clinton, 1824) -- valid -- queue à tache noire, queue à tâche noire, spottail shiner
  Notropis hypsilepis Suttkus and Raney, 1955 -- valid -- highscale shiner
  Notropis jemezanus (Cope in Cope and Yarrow, 1875) -- valid -- carpita del Bravo, Rio Grande shiner
  Notropis leuciodus (Cope, 1868) -- valid -- Tennessee shiner
  Notropis longirostris (Hay, 1881) -- valid -- longnose shiner
  Notropis lutipinnis (Jordan and Brayton, 1878) -- valid -- yellowfin shiner
  Notropis maculatus (Hay, 1881) -- valid -- taillight shiner
  Notropis mekistocholas Snelson, 1971 -- valid -- Cape Fear shiner
  Notropis melanostomus Bortone, 1989 -- valid -- blackmouth shiner
  Notropis micropteryx (Cope, 1868) -- valid -- highland shiner, redface shiner, southern rosyface shiner
  Notropis moralesi de Buen, 1955 -- valid -- carpita Tepelneme, Papaloapan chub
  Notropis nazas Meek, 1904 -- valid -- carpita del Nazas, Nazas shiner
  Notropis nubilus (Forbes in Jordan, 1878) -- valid -- Ozark minnow, roseate shiner
  Notropis orca Woolman, 1894 -- valid -- carpita de El Paso, phantom shiner
  Notropis ortenburgeri Hubbs in Ortenburger and Hubbs, 1927 -- valid -- Kiamichi shiner
  Notropis oxyrhynchus Hubbs and Bonham, 1951 -- valid -- sharpnose shiner
  Notropis ozarcanus Meek, 1891 -- valid -- Ozark shiner
  Notropis percobromus (Cope, 1871) -- valid -- carmine shiner
  Notropis perpallidus Hubbs and Black, 1940 -- valid -- peppered shiner
  Notropis petersoni Fowler, 1942 -- valid -- coastal shiner
  Notropis photogenis (Cope, 1865) -- valid -- silver shiner
  Notropis potteri Hubbs and Bonham, 1951 -- valid -- chub shiner
  Notropis procne (Cope, 1865) -- valid -- swallowtail shiner
  Notropis rafinesquei Suttkus, 1991 -- valid -- Yazoo shiner
  Notropis rubellus (Agassiz, 1850) -- valid -- rosyface shiner, tête rose
  Notropis rubricroceus (Cope, 1868) -- valid -- saffron shiner
  Notropis rupestris Page in Page and Beckham, 1987 -- valid -- bedrock shiner
  Notropis sabinae Jordan and Gilbert, 1886 -- valid -- Sabine shiner
  Notropis saladonis Hubbs and Hubbs, 1958 -- valid -- carpita del Salado, Salado shiner
  Notropis scabriceps (Cope, 1868) -- valid -- New River shiner
  Notropis scepticus (Jordan and Gilbert, 1883) -- valid -- sandbar shiner
  Notropis semperasper Gilbert, 1961 -- valid -- roughhead shiner
  Notropis shumardi (Girard, 1856) -- valid -- silverband shiner
  Notropis simus (Cope in Cope and Yarrow, 1875) -- valid -- bluntnose shiner, carpita chata
  Notropis spectrunculus (Cope, 1868) -- valid -- mirror shiner
  Notropis stilbius Jordan, 1877 -- valid -- silverstripe shiner
  Notropis stramineus (Cope, 1865) -- valid -- carpita arenera, méné paille, sand shiner
  Notropis suttkusi Humphries and Cashner, 1994 -- valid -- rocky shiner
  Notropis telescopus (Cope, 1868) -- valid -- telescope shiner
  Notropis texanus (Girard, 1856) -- valid -- weed shiner
  Notropis topeka (Gilbert, 1884) -- valid -- Topeka shiner
  Notropis tropicus Hubbs and Miller, 1975 -- valid -- carpita tropical, pygmy shiner
  Notropis uranoscopus Suttkus, 1959 -- valid -- skygazer shiner
  Notropis volucellus (Cope, 1865) -- valid -- méné pâle, mimic shiner
  Notropis wickliffi Trautman, 1931 -- valid -- channel shiner
  Notropis xaenocephalus (Jordan, 1877) -- valid -- Coosa shiner
  Noturus albater Taylor, 1969 -- valid -- Ozark madtom
  Noturus baileyi Taylor, 1969 -- valid -- smoky madtom
  Noturus elegans Taylor, 1969 -- valid -- elegant madtom
  Noturus eleutherus Jordan, 1877 -- valid -- mountain madtom
  Noturus exilis Nelson, 1876 -- valid -- slender madtom
  Noturus flavater Taylor, 1969 -- valid -- checkered madtom
  Noturus flavipinnis Taylor, 1969 -- valid -- yellowfin madtom
  Noturus flavus Rafinesque, 1818 -- valid -- barbotte des rapides, stonecat
  Noturus funebris Gilbert and Swain in Gilbert, 1891 -- valid -- black madtom
  Noturus furiosus Jordan and Meek in Jordan, 1889 -- valid -- Carolina madtom
  Noturus gilberti Jordan and Evermann in Jordan, 1889 -- valid -- orangefin madtom
  Noturus gyrinus (Mitchill, 1817) -- valid -- chat-fou brun, tadpole madtom
  Noturus hildebrandi (Bailey and Taylor, 1950) -- valid -- least madtom
  Noturus insignis (Richardson, 1836) -- valid -- chat-fou liséré, margined madtom
  Noturus lachneri Taylor, 1969 -- valid -- Ouachita madtom
  Noturus leptacanthus Jordan, 1877 -- valid -- speckled madtom
  Noturus miurus Jordan, 1877 -- valid -- brindled madtom, chat-fou tâcheté
  Noturus munitus Suttkus and Taylor, 1965 -- valid -- frecklebelly madtom
  Noturus nocturnus Jordan and Gilbert, 1886 -- valid -- freckled madtom
  Noturus phaeus Taylor, 1969 -- valid -- brown madtom
  Noturus placidus Taylor, 1969 -- valid -- Neosho madtom
  Noturus stanauli Etnier and Jenkins, 1980 -- valid -- pygmy madtom
  Noturus stigmosus Taylor, 1969 -- valid -- northern madtom
  Noturus taylori Douglas, 1972 -- valid -- Caddo madtom
  Noturus trautmani Taylor, 1969 -- valid -- Scioto madtom
  Novaculichthys taeniourus (Lacépède, 1801) -- valid -- clown wrasse, cuchillo dragón, rockmover, rockmover wrasse
  Novumbra hubbsi Schultz, 1929 -- valid -- Olympic mudminnow
  Occella dodecaedron (Tilesius, 1813) -- valid -- Bering poacher
  Ocyurus chrysurus (Bloch, 1791) -- valid -- rabirrubia, rubia, yellowtail snapper
  Odontaspididae Müller and Henle, 1839 -- valid -- goblin sharks, requins-taureaux, sand sharks, sand tiger sharks, sand tigers, tiburones toro
  Odontaspis ferox (Risso, 1810) -- valid -- bumpytail raggedtooth, ragged-tooth shark, smalltooth sand tiger, tiburón dientes de perro
  Odontaspis noronhai (Maul, 1955) -- valid -- bigeye sand shark, bigeye sand tiger
  Odontognathus panamensis (Steindachner, 1876) -- valid -- Panama longfin herring, sardina machete panameña
  Odontopyxis trispinosa Lockington, 1880 -- valid -- bandido enano, pygmy poacher
  Odontoscion dentex (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- corvina dentuda, reef croaker
  Ogcocephalidae Jordan, 1895 -- valid -- batfishes, chauves-souris de mer, murciélagos
  Ogcocephalus corniger Bradbury, 1980 -- valid -- longnose batfish, pez diablo narizón
  Ogcocephalus cubifrons (Richardson, 1836) -- valid -- murciélago diablo, polka-dot batfish
  Ogcocephalus declivirostris Bradbury, 1980 -- valid -- murciélago inclinado, slantbrow batfish
  Ogcocephalus nasutus (Cuvier, 1829) -- valid -- murciélago tapacaminos, pez diablo ñato, shortnose batfish
  Ogcocephalus pantostictus Bradbury, 1980 -- valid -- murciélago manchado, spotted batfish
  Ogcocephalus parvus Longley and Hildebrand, 1940 -- valid -- murciélago lomo áspero, roughback batfish
  Ogcocephalus rostellum Bradbury, 1980 -- valid -- palefin batfish
  Ogilbia cayorum Evermann and Kendall, 1898 -- valid -- brótula rojiza, key brotula
  Ogilbia pearsei (Hubbs, 1938) -- invalid -- dama blanca ciega, Mexican blind brotula
  Ogilbia ventralis (Gill, 1863) -- valid -- brótula del Golfo, Gulf brotula
  Oligocottus maculosus Girard, 1856 -- valid -- tidepool sculpin
  Oligocottus rimensis (Greeley, 1899) -- valid -- charrasco ensillado, saddleback sculpin
  Oligocottus rubellio (Greeley, 1899) -- valid -- charrasco rosado, rosy sculpin
  Oligocottus snyderi Greeley in Jordan and Evermann, 1898 -- valid -- charrasco peludo, fluffy sculpin
  Oligoplites altus (Günther, 1868) -- valid -- leatherjacket, longjaw leatherjack, piña bocona
  Oligoplites refulgens Gilbert and Starks, 1904 -- valid -- piña flaca, shortjaw leatherjack
  Oligoplites saurus (Bloch and Schneider, 1801) -- valid -- leatherjack, leatherjacket, piña sietecueros, zapatero
  Oncorhynchus chrysogaster (Needham and Gard, 1964) -- valid -- Mexican golden trout, trucha dorada mexicana
  Oncorhynchus clarki (Richardson, 1836) -- invalid
  Oncorhynchus clarkii (Richardson, 1836) -- valid -- cutthroat trout, trucha degollada, truite fardée
  Oncorhynchus gilae (Miller, 1950) -- valid -- Gila trout
  Oncorhynchus gorbuscha (Walbaum, 1792) -- valid -- humpback, humpbacked salmon, pink salmon, saumon rose
  Oncorhynchus keta (Walbaum in Artedi, 1792) -- valid -- chum salmon
  Oncorhynchus kisutch (Walbaum, 1792) -- valid -- coho salmon, salmón plateado, saumon coho, silver salmon
  Oncorhynchus mykiss (Walbaum, 1792) -- valid -- rainbow trout, redband trout, steelhead, trucha arcoiris, truite arc-en-ciel
  Oncorhynchus nerka (Walbaum in Artedi, 1792) -- valid -- blueback salmon, kokanee, red salmon, saumon rouge, sockeye salmon
  Oncorhynchus tshawytscha (Walbaum in Artedi, 1792) -- valid -- Chinook salmon, king salmon, salmón boquinegra, saumon chinook
  Ophichthidae -- valid -- serpents de mer, snake eels, tiesos, worm eels
  Ophichthus apachus McCosker and Rosenblatt, 1998 -- valid -- thin snake eel, tieso delgado
  Ophichthus cruentifer (Goode and Bean, 1896) -- valid -- margined snake eel
  Ophichthus frontalis Garman, 1899 -- valid -- deathbanded snake eel, tieso funebre
  Ophichthus gomesii (Castelnau, 1855) -- valid -- safío prieto, shrimp eel, tieso camaronero
  Ophichthus hyposagmatus McCosker and Böhlke, 1984 -- valid -- faintsaddled snake eel
  Ophichthus longipenis McCosker and Rosenblatt, 1998 -- valid -- slender snake eel, tieso fino
  Ophichthus mecopterus McCosker and Rosenblatt, 1998 -- valid -- longarmed snake eel, tieso brazo largo
  Ophichthus melanoporus Kanazawa, 1963 -- valid -- blackpored eel
  Ophichthus omorgmus McCosker and Böhlke, 1984 -- valid -- dottedline snake eel
  Ophichthus ophis (Linnaeus, 1758) -- valid -- safío de manchas negras, spotted snake eel
  Ophichthus puncticeps (Kaup, 1860) -- valid -- palespotted eel
  Ophichthus rex Böhlke and Caruso, 1980 -- valid -- king snake eel, lairón
  Ophichthus triserialis (Kaup, 1856) -- valid -- Pacific snake eel, tieso del Pacífico
  Ophichthus zophochir Jordan and Gilbert, 1882 -- valid -- tieso amarillo, yellow snake eel
  Ophidiidae -- valid -- brotulas, brótulas, brótulas y congriperlas, congriperlas, cusk eels, cusk-eels, donzelles
  Ophidiiformes -- valid -- ophidiiforms
  Ophidion antipholus Lea and Robins, 2003 -- valid -- congriperla narizón, longnose cusk-eel
  Ophidion dromio Lea and Robins, 2003 -- valid -- shorthead cusk-eel
  Ophidion galeoides (Gilbert, 1890) -- valid -- congriperla adornada, spotfin cusk-eel
  Ophidion grayi (Fowler, 1948) -- valid -- blotched cusk-eel
  Ophidion holbrookii Putnam, 1874 -- valid -- bank cusk-eel, congriperla de bajos
  Ophidion imitator Lea, 1997 -- valid -- congriperla mimética, mimic cusk-eel
  Ophidion iris Breder, 1936 -- valid -- brighteye cusk-eel, congriperla arcoiris
  Ophidion josephi Girard, 1858 -- valid -- congriperla crestada, crested cusk-eel
  Ophidion lagochila (Böhlke and Robins, 1959) -- valid -- congriperla labio leporino, hairlip cusk, harelip cusk-eel
  Ophidion marginatum DeKay, 1842 -- valid -- striped cusk-eel
  Ophidion nocomis Robins and Böhlke, 1959 -- valid -- congriperla nacarada, letter opener
  Ophidion robinsi Fahay, 1992 -- valid -- colonial cusk-eel
  Ophidion scrippsae (Hubbs, 1916) -- valid -- basketweave cusk-eel, congriperla canastera
  Ophidion selenops Robins and Böhlke, 1959 -- valid -- mooneye cusk-eel
  Ophioblennius macclurei (Silvester, 1915) -- valid -- blenio bembirrojo, borracho labio rojo, redlip blenny
  Ophioblennius steindachneri Jordan and Evermann, 1898 -- valid -- borracho mono, Panamic fanged blenny
  Ophiodon elongatus Girard, 1854 -- valid -- lingcod, molva
  Ophioscion scierus (Jordan and Gilbert, 1884) -- valid -- corvineta parda, dusky croaker
  Ophioscion strabo Gilbert, 1897 -- valid -- corvineta bizca, squint-eyed croaker
  Ophioscion typicus Gill, 1863 -- valid -- corvineta corredora, racer croaker
  Ophioscion vermicularis (Günther, 1867) -- valid -- corvineta cococha, wormlined croaker
  Ophisternon aenigmaticum Rosen and Greenwood, 1976 -- valid -- anguila falsa, obscure swamp eel, swamp eel
  Ophisternon infernale (Hubbs, 1938) -- valid -- anguila ciega yucateca, blind swamp eel
  Opisthonema bulleri (Regan, 1904) -- valid -- sardina crinuda azul, slender thread herring
  Opisthonema libertate (Günther, 1867) -- valid -- deepbody thread herring, Pacific thread herring, sardina crinuda
  Opisthonema medirastre Berry and Barrett, 1963 -- valid -- middling thread herring, sardina crinuda machete
  Opisthonema oglinum (Lesueur, 1818) -- valid -- Atlantic thread herring, machuelo, sardina vivita de hebra
  Opisthoproctidae -- valid -- barreleyes, peces duende, revenants, spookfishes
  Opisthopterus dovii (Günther, 1868) -- valid -- Dove's longfin herring, Pacific longfin herring, sardina machete chata
  Opistognathidae -- valid -- bocones, jawfishes, smilers, tout-en-gueule
  Opistognathus aurifrons (Jordan and Thompson, 1905) -- valid -- bocón cabeza amarilla, guardian cabeziamarillo, yellowhead jawfish
  Opistognathus lonchurus Jordan and Gilbert, 1882 -- valid -- bocón bigote, guardian verdoso, moustache jawfish
  Opistognathus macrognathus Poey, 1860 -- valid -- banded jawfish, guardian bocón, longjaw jawfish, spotfin jawfish
  Opistognathus maxillosus Poey, 1860 -- valid -- bocón moteado, guardian jaspeado, mottled jawfish
  Opistognathus megalepis Smith-Vaniz, 1972 -- valid -- bocón escamón, largescale jawfish
  Opistognathus melachasme Smith-Vaniz, 1972 -- valid -- megabocón, megamouth jawfish, yellowmouth jawfish
  Opistognathus mexicanus Allen and Robertson, 1991 -- valid -- bocón mexicano, Mexican jawfish
  Opistognathus nothus Smith-Vaniz, 1997 -- valid -- yellowmouth jawfish
  Opistognathus punctatus Peters, 1869 -- valid -- bocón punteado, finespotted jawfish
  Opistognathus rhomaleus Jordan and Gilbert, 1882 -- valid -- bocón gigante, giant jawfish
  Opistognathus robinsi Smith-Vaniz, 1997 -- valid -- spotfin jawfish
  Opistognathus rosenblatti Allen and Robertson, 1991 -- valid -- bluespotted jawfish, bocón manchas azules
  Opistognathus scops (Jenkins and Evermann, 1889) -- valid -- bocón ocelado, bullseye jawfish
  Opistognathus whitehursti (Longley, 1927) -- valid -- bocón prieto, dusky jawfish, guardian escamudo
  Opsanus beta (Goode and Bean, 1880) -- valid -- Gulf toadfish, sapo boquiblanca, sapo de boca blanca
  Opsanus dichrostomus Collette, 2001 -- valid -- bicolor toadfish, sapo bicolor
  Opsanus pardus (Goode and Bean, 1880) -- valid -- leopard toadfish, sapo leopardo
  Opsanus tau (Linnaeus, 1766) -- valid -- oyster toadfish
  Opsopoeodus emiliae Hay, 1881 -- valid -- pugnose minnow
  Oregonichthys crameri (Snyder, 1908) -- valid -- Oregon chub
  Oregonichthys kalawatseti Markle, Pearsons and Bills, 1991 -- valid -- Umpqua chub, Umpqua Oregon chub
  Oreochromis aureus (Steindachner, 1864) -- valid -- blue tilapia, tilapia azul
  Oreochromis mossambicus (Peters, 1852) -- valid -- Mozambique mouth-breeder, Mozambique mouthbrooder, Mozambique tilapia, tilapia mosambica
  Oreochromis niloticus (Linnaeus, 1758) -- valid -- Nile mouthbreeder, Nile tilapia, tilapia del Nilo
  Oreochromis urolepis (Norman, 1922) -- valid -- Wami tilapia
  Orthodon microlepidotus (Ayres, 1854) -- valid -- Sacramento blackfish
  Orthonopias triacis Starks and Mann, 1911 -- valid -- charrasco chato, snubnose sculpin
  Orthopristis cantharinus (Jenyns, 1840) -- valid -- sheephead grunt, teniente
  Orthopristis chalceus (Günther, 1864) -- valid -- burrito corcovado, humpback grunt
  Orthopristis chrysoptera (Linnaeus, 1766) -- valid -- burro, corocoro armado, pigfish
  Orthopristis reddingi Jordan and Richardson in Jordan, 1895 -- valid -- bronzestriped grunt, burrito rayado
  Osmeridae -- valid -- capellanes, éperlans, smelts
  Osmerus mordax (Mitchill, 1814) -- valid -- éperlan arc-en-ciel, rainbow smelt
  Ostichthys trachypoma (Günther, 1859) -- valid -- bigeye soldierfish, candil de lo alto
  Ostraciidae -- valid -- boxfishes, cofferfishes, coffres, cowfishes, peces cofre, trunkfishes
  Ostracion meleagris Shaw in Shaw and Nodder, 1796 -- valid -- cofre moteado, pahu, pahu, spotted boxfish
  Otophidium chickcharney Böhlke and Robins, 1959 -- valid -- congriperla fantasma, ghost cusk-eel
  Otophidium dormitator Böhlke and Robins, 1959 -- valid -- sleeper cusk-eel
  Otophidium indefatigabile Jordan and Bollman, 1890 -- valid -- congriperla cabezona, Panamic cusk-eel
  Otophidium omostigma (Jordan and Gilbert, 1882) -- valid -- congriperla lunareja, polka-dot cusk-eel
  Oxycirrhites typus Bleeker, 1857 -- valid -- halcón narigón, longnose hawkfish
  Oxyjulis californica (Günther, 1861) -- valid -- senorita, señorita, señorita, señorita californiana
  Oxylebius pictus Gill, 1862 -- valid -- molva pinta, painted greenling
  Oxyporhamphus micropterus (Valenciennes in Cuvier and Valenciennes, 1847) -- valid -- smallwing flyingfish, volador alita
  Oxyurichthys stigmalophius (Mead and Böhlke, 1958) -- valid -- gobio aleta manchada, gobio manchado, spotfin goby
  Pagrus pagrus (Linnaeus, 1758) -- valid -- red porgy, sargo rojo
  Palatogobius paradoxus Gilbert, 1971 -- valid -- mauve goby
  Pallasina barbata (Steindachner, 1876) -- valid -- tubenose poacher
  Parabathymyrus oregoni Smith and Kanazawa, 1977 -- valid -- congrio nariz colgada, flapnose conger
  Parablennius marmoreus (Poey, 1876) -- valid -- blenio marmoreo, borracho marmóreo, seaweed blenny
  Paraclinus altivelis (Lockington, 1881) -- valid -- topgallant blenny, trambollito juanete
  Paraclinus beebei Hubbs, 1952 -- valid -- pink blenny, trambollito clavel
  Paraclinus cingulatus (Evermann and Marsh, 1899) -- valid -- coral blenny, sapito coral, trambollito coralino
  Paraclinus ditrichus Rosenblatt and Parr, 1969 -- valid -- leastfoot blenny, trambollito pocas patas
  Paraclinus fasciatus (Steindachner, 1876) -- valid -- banded blenny, sapito ocelado, trambollito ocelado
  Paraclinus grandicomis (Rosén, 1911) -- valid -- horned blenny, sapito tarrudo
  Paraclinus infrons Böhlke, 1960 -- valid -- bald blenny, trambollito pelón
  Paraclinus integripinnis (Smith, 1880) -- valid -- reef finspot, trambollito de arrecife
  Paraclinus magdalenae Rosenblatt and Parr, 1969 -- valid -- Magdalena blenny, trambollito de Magdalena
  Paraclinus marmoratus (Steindachner, 1876) -- valid -- marbled blenny, sapito punteado
  Paraclinus mexicanus (Gilbert, 1904) -- valid -- Mexican blenny, trambollito mexicano
  Paraclinus naeorhegmis Böhlke, 1960 -- valid -- surf blenny, surf blenny, trambollito de la resaca
  Paraclinus nigripinnis (Steindachner, 1867) -- valid -- blackfin blenny, sapito aletinegro, trambollito aletinegra
  Paraclinus sini Hubbs, 1952 -- valid -- flapscale blenny, trambollito frondoso
  Paraclinus stephensi Rosenblatt and Parr, 1969 -- valid -- professor blenny, trambollito del maestro
  Paraclinus tanygnathus Rosenblatt and Parr, 1969 -- valid -- longjaw blenny, trambollito adornado
  Paraclinus walkeri Hubbs, 1952 -- valid -- San Quintin blenny, trambollito de San Quintín
  Paraconger californiensis Kanazawa, 1961 -- valid -- congrio anteojos, ringeye conger
  Paraconger caudilimbatus (Poey, 1867) -- valid -- congrio, congrio cola de bordes, margintail conger
  Paraconger similis (Wade, 1946) -- valid -- congrio colicorta, shorttail conger
  Paradiplogrammus bairdi (Jordan in Eigenmann and Eigenmann, 1888) -- valid -- dragoncillo coralino, lancer dragonet
  Parahollardia lineata (Longley, 1935) -- valid -- cochi rombo, jambeau
  Paralabrax auroguttatus Walford, 1936 -- valid -- cabrilla extranjera, goldspotted sand bass
  Paralabrax clathratus (Girard, 1854) -- valid -- cabrilla sargacera, kelp bass
  Paralabrax loro Walford, 1936 -- valid -- cabrilla cachete amarillo, parrot sand bass
  Paralabrax maculatofasciatus (Steindachner, 1868) -- valid -- cabrilla de roca, spotted sand bass
  Paralabrax nebulifer (Girard, 1854) -- valid -- barred sand bass, cabrilla verde de arena
  Paralepididae -- valid -- barracudinas, barracudinas, lussions
  Paraletharchus opercularis (Myers and Wade, 1941) -- valid -- pouch snake eel, tieso bolsa
  Paraletharchus pacificus (Osburn and Nichols, 1916) -- valid -- Pacific sailfin eel, tieso vela del Pacífico
  Paralichthyidae -- valid -- flétans de sable, lefteye flounders, lenguados areneros, sand flounders
  Paralichthys aestuarius Gilbert & Scofield, 1898 -- valid -- Cortez halibut, Cortez Halibut, lenguado de Cortés
  Paralichthys albigutta Jordan & Gilbert, 1882 -- valid -- Gulf flounder, Gulf Flounder, lenguado panzablanca
  Paralichthys californicus (Ayres, 1859) -- valid -- California halibut, California Halibut, lenguado californiano
  Paralichthys dentatus (Linnaeus, 1766) -- valid -- cardeau d'été, fluke, summer flounder, Summer Flounder
  Paralichthys lethostigma Jordan & Gilbert in Jordan & Meek, 1884 -- valid -- lenguado limpio, Southern Flounder, southern flounder
  Paralichthys oblongus (Mitchill, 1815) -- valid -- cardeau à quatre ocelles, Fourspot Flounder, fourspot flounder
  Paralichthys squamilentus Jordan & Gilbert, 1882 -- valid -- broad flounder, Broad Flounder, lenguado huarachón
  Paralichthys woolmani Jordan & Williams in Gilbert, 1897 -- valid -- dappled flounder, Dappled Flounder, lenguado huarache
  Paraliparis calidus Cohen, 1968 -- valid -- limace ardente, lowfin snailfish
  Paraliparis deani Burke, 1912 -- valid -- prickly snailfish
  Paralonchurus goodei Gilbert in Jordan and Evermann, 1898 -- valid -- angel croaker, corvalo, corvalo, corvineta ángel
  Paranthias colonus (Valenciennes, 1846) -- valid -- Pacific creole-fish, Pacific creolefish, sandía
  Paranthias furcifer (Valenciennes in Cuvier and Valenciennes, 1828) -- valid -- Atlantic creolefish, Creole-fish, rabirrubia de lo alto, rabirrubia del Golfo
  Parapsettus panamensis (Steindachner, 1876) -- valid -- Panama spadefish, zapatero
  Parasudis truculenta (Goode and Bean, 1896) -- valid -- longnose greeneye, ojiverde espátula, ojiverde truculento
  Pareques acuminatus (Bloch and Schneider, 1801) -- valid -- high-hat, payasito largo, vaqueta rayada
  Pareques fuscovittatus (Kendall and Radcliffe, 1912) -- valid -- festive drum, payasito lindo
  Pareques iwamotoi Miller and Woods, 1988 -- valid -- blackbar drum, payasito rayado
  Pareques umbrosus (Jordan and Eigenmann, 1889) -- valid -- cubbyu, payasito prieto
  Pareques viola (Gilbert in Jordan and Evermann, 1898) -- valid -- payasito gungo, rock croaker
  Parexocoetus brachypterus (Richardson, 1846) -- valid -- sailfin flyingfish, volador aletón, volador velero
  Paricelinus hopliticus Eigenmann and Eigenmann, 1889 -- valid -- thornback sculpin
  Parmaturus xaniurus (Gilbert, 1892) -- valid -- filetail cat shark, pejegato lima
  Parophidion lagochila Böhlke and Robins, 1959 -- invalid -- congriperla labio leporino, hairlip cusk, harelip cusk-eel
  Parophidion schmidti (Woods and Kanazawa, 1951) -- valid -- congriperla parda, dusky cusk-eel
  Parophrys vetulus Girard, 1854 -- valid -- carlottin anglais, English sole, English Sole, platija limón
  Parrella ginsburgi Wade, 1946 -- valid -- darkblotch goby, gobio lunarejo
  Parrella lucretiae (Eigenmann and Eigenmann, 1888) -- valid -- gobio maculado, maculated goby
  Parrella maxillaris Ginsburg, 1938 -- valid -- doublestripe goby, gobio veteado
  Pempheridae -- valid -- barrenderos, poissons-balayeurs, sweepers
  Pempheris schomburgkii Müller and Troschel in Schomburgk, 1848 -- valid -- barrendero transparente, glassy sweeper, pemferis bandeado
  Penetopteryx nanus (Rosén, 1911) -- valid -- finless pipefish, finless pipefish, lost pipefish, pez pipa gusano, worm pipefish
  Pentacerotidae -- valid -- armorheads, boarfishes, espartanos, têtes casquées
  Peprilus burti Fowler, 1944 -- valid -- Gulf butterfish, palometa del Golfo
  Peprilus medius (Peters, 1869) -- valid -- Pacific harvestfish, palometa, palometa
  Peprilus ovatus Horn, 1970 -- valid -- Cortez butterfish, palometa de Cortés
  Peprilus paru (Linnaeus, 1758) -- valid -- harvestfish, northern harvestfish, northern harvestfish, palometa moneda, palometa pámpano
  Peprilus simillimus (Ayres, 1860) -- valid -- Pacific pompano, palometa plateada
  Peprilus snyderi Gilbert and Starks, 1904 -- valid -- palometa salema, salema butterfish
  Peprilus triacanthus (Peck, 1804) -- valid -- butterfish, palometa estrecha, stromatée à fossettes
  Perca flavescens (Mitchill, 1814) -- valid -- perchaude, yellow perch
  Percidae -- valid -- percas, perches, perches, perches et dards, true perches
  Percina antesella Williams and Etnier, 1977 -- valid -- amber darter
  Percina aurantiaca (Cope, 1868) -- valid -- tangerine darter
  Percina aurolineata Suttkus and Ramsey, 1967 -- valid -- goldline darter
  Percina aurora Suttkus and Thompson in Suttkus, Thompson and Bart, 1994 -- valid -- pearl darter
  Percina austroperca Thompson, 1995 -- valid -- southern logperch
  Percina brevicauda Suttkus and Bart in Suttkus, Thompson and Bart, 1994 -- valid -- coal darter
  Percina burtoni Fowler, 1945 -- valid -- blotchside logperch
  Percina caprodes (Rafinesque, 1818) -- valid -- fouille-roche zébré, logperch
  Percina carbonaria (Baird and Girard, 1853) -- valid -- Texas logperch
  Percina copelandi (Jordan, 1877) -- valid -- channel darter, fouille-roche gris
  Percina crassa (Jordan and Brayton, 1878) -- valid -- Piedmont darter
  Percina cymatotaenia (Gilbert and Meek in Gilbert, 1887) -- valid -- bluestripe darter
  Percina evides (Jordan and Copeland in Jordan, 1877) -- valid -- gilt darter
  Percina gymnocephala Beckham, 1980 -- valid -- Appalachia darter
  Percina jenkinsi Thompson, 1985 -- valid -- Conasauga logperch
  Percina kathae Thompson, 1997 -- valid -- Mobile logperch
  Percina lenticula Richards and Knapp, 1964 -- valid -- freckled darter
  Percina macrocephala (Cope, 1867) -- valid -- longhead darter
  Percina macrolepida Stevenson, 1971 -- valid -- bigscale logperch, perca escamona
  Percina maculata (Girard, 1859) -- valid -- blackside darter
  Percina nasuta (Bailey, 1941) -- valid -- longnose darter
  Percina nigrofasciata (Agassiz, 1854) -- valid -- blackbanded darter
  Percina notogramma (Raney and Hubbs, 1948) -- valid -- stripeback darter
  Percina oxyrhynchus (Hubbs and Raney, 1939) -- valid -- sharpnose darter
  Percina palmaris (Bailey, 1940) -- valid -- bronze darter
  Percina pantherina (Moore and Reeves, 1955) -- valid -- leopard darter
  Percina peltata (Stauffer in Cope, 1864) -- valid -- shield darter
  Percina phoxocephala (Nelson, 1876) -- valid -- slenderhead darter
  Percina rex (Jordan and Evermann in Jordan, 1889) -- valid -- Roanoke logperch
  Percina roanoka (Jordan and Jenkins in Jordan, 1889) -- valid -- Roanoke darter
  Percina sciera (Swain, 1883) -- valid -- dusky darter
  Percina shumardi (Girard, 1859) -- valid -- river darter
  Percina squamata (Gilbert and Swain in Gilbert, 1887) -- valid -- olive darter
  Percina stictogaster Burr and Page, 1993 -- valid -- frecklebelly darter
  Percina suttkusi Thompson, 1997 -- valid -- Gulf logperch
  Percina tanasi Etnier, 1976 -- valid -- snail darter
  Percina uranidea (Jordan and Gilbert in Gilbert, 1887) -- valid -- stargazing darter
  Percina vigil (Hay, 1882) -- valid -- saddleback darter
  Percis japonica (Pallas, 1769) -- valid -- dragon poacher
  Percophidae -- valid -- duckbills, flatheads, flatnoses, picos de pato, platêtes
  Percopsidae Agassiz, 1850 -- valid -- omiscos, percas falsas, trout perches, trout-perches
  Percopsiformes -- valid -- percopsiforms, trout-perches
  Percopsis omiscomaycus (Walbaum, 1792) -- valid -- omisco, trout-perch
  Percopsis transmontana (Eigenmann and Eigenmann in Eigenmann, 1892) -- valid -- sand roller
  Perissias taeniopterus (Gilbert, 1890) -- valid -- flag flounder, Flag Flounder, lenguado bandera
  Peristediidae -- invalid -- armored searobins, malarmats, vaquitas blindadas
  Peristedion gracile Goode and Bean, 1896 -- valid -- espátula esbelta, slender searobin, vaquita blindada flaca
  Peristedion greyae Miller, 1967 -- valid -- alligator searobin, prickly searobin
  Peristedion miniatum Goode, 1880 -- valid -- armored searobin
  Peristedion paucibarbiger Castro-Aguirre and Garcia-Domínguez, 1984 -- valid -- Cortez searobin, vaquita blindada de Cortés
  Peristedion thompsoni Fowler, 1952 -- valid -- rimspine searobin
  Petenia splendida Günther, 1862 -- valid -- giant cichlid, tenguayaca
  Petromyzon marinus Linnaeus, 1758 -- valid -- lake lamprey, lamproie marine, sea lamprey
  Petromyzontidae -- valid -- lampreas, lampreys, lamproies
  Petrotyx hopkinsi Heller and Snodgrass, 1903 -- valid -- brótula hocico terciopelado, velvetnose brotula
  Petrotyx sanguineus (Meek and Hildebrand, 1928) -- valid -- brótula aletiroja, redfin brotula
  Phaenomonas pinnata Myers and Wade, 1941 -- valid -- elastic eel, tieso elástico
  Phaeoptyx conklini (Silvester, 1915) -- valid -- cardenal pecoso, freckled cardinalfish
  Phaeoptyx pigmentaria (Poey, 1860) -- valid -- cardenal pigmentado, cardenal prieto, dusky cardinalfish
  Phaeoptyx xenus (Böhlke and Randall, 1968) -- valid -- cardenal esponjero, cardenal violáeo, sponge cardinalfish
  Phallichthys fairweatheri Rosen and Bailey, 1959 -- valid -- picotee livebearer, topo
  Phallocottus obtusus Schultz, 1938 -- valid -- spineless sculpin
  Phanerodon atripes (Jordan and Gilbert, 1880) -- valid -- mojarra picuda, sharpnose seaperch
  Phanerodon furcatus Girard, 1854 -- valid -- mojarra lomo rayado, white seaperch
  Phenacobius catostomus Jordan, 1877 -- valid -- riffle minnow
  Phenacobius crassilabrum Minckley and Craddock, 1962 -- valid -- fatlips minnow
  Phenacobius mirabilis (Girard, 1856) -- valid -- suckermouth minnow
  Phenacobius teretulus Cope, 1867 -- valid -- Kanawha minnow
  Phenacobius uranops Cope, 1867 -- valid -- stargazing minnow
  Pherallodiscus funebris (Gilbert, 1890) -- valid -- chupapiedra discofrágil norteña, northern fraildisc clingfish
  Pherallodiscus varius Briggs, 1955 -- valid -- chupapiedra discofrágil sureña, southern fraildisc clingfish
  Pholidae Gill, 1893 -- valid -- espinosos de marea, gunnels, sigouines
  Pholis clemensi Rosenblatt, 1964 -- valid -- longfin gunnel
  Pholis fasciata (Bloch and Schneider, 1801) -- valid -- banded gunnel
  Pholis gunnellus (Linnaeus, 1758) -- valid -- rock gunnel, sigouine de roche
  Pholis laeta (Cope, 1873) -- valid -- crescent gunnel
  Pholis ornata (Girard, 1854) -- valid -- saddleback gunnel
  Pholis schultzi Schultz, 1931 -- valid -- red gunnel
  Phosichthyidae -- valid -- lightfishes, lighthousefishes, peces luminosos, poissons étoilés
  Phoxinus cumberlandensis Starnes and Starnes, 1978 -- invalid -- blackside dace
  Phoxinus eos (Cope, 1861) -- invalid -- northern redbelly dace, ventre rouge du nord
  Phoxinus erythrogaster (Rafinesque, 1820) -- invalid -- southern redbelly dace
  Phoxinus neogaeus Cope, 1867 -- invalid -- finescale dace, ventre citron
  Phoxinus oreas (Cope, 1868) -- invalid -- mountain redbelly dace
  Phoxinus saylori Skelton, 2001 -- invalid -- laurel dace
  Phoxinus tennesseensis Starnes and Jenkins, 1988 -- invalid -- Tennessee dace
  Phthanophaneron harveyi (Rosenblatt and Montgomery, 1976) -- valid -- ojo de linterna panámica, Panamic flashlightfish
  Phtheirichthys lineatus (Menzies, 1791) -- valid -- pez pega lineado, rémora delgada, slender suckerfish
  Phycidae -- invalid -- merluzas barbonas, phycid hakes, phycidés
  Phycis chesteri Goode and Bean, 1878 -- valid -- longfin hake
  Physiculus fulvus Bean, 1884 -- valid -- carbonero metálico, hakeling, metallic codling
  Physiculus nematopus Gilbert, 1890 -- valid -- carbonero de fango, charcoal codling
  Physiculus rastrelliger Gilbert, 1890 -- valid -- carbonero negro, hundred-fathom codling
  Physiculus talarae Hildebrand and Barton, 1949 -- valid -- carbonero peruano, Peruvian codling
  Phytichthys chirus (Jordan and Gilbert, 1880) -- valid -- ribbon prickleback
  Pimelodidae -- valid -- flat-hosed catfishes, juiles, long-whiskered catfishes, longwhiskered catfishes, poissons-chats à longues moustaches
  Pimephales notatus (Rafinesque, 1820) -- valid -- bluntnose minnow, ventre-pourri
  Pimephales promelas Rafinesque, 1820 -- valid -- carpita cabezona, fathead minnow, tête-de-boule
  Pimephales tenellus (Girard, 1856) -- valid -- slim minnow
  Pimephales vigilax (Baird and Girard, 1853) -- valid -- bullhead minnow, carpita cabeza de toro
  Pisodonophis daspilotus Gilbert in Jordan and Evermann, 1898 -- valid -- blunt-toothed snake eel, tieso dientes romos
  Plagiogrammus hopkinsii Bean, 1894 -- valid -- crisscross prickleback
  Plagiotremus azaleus (Jordan and Bollman, 1890) -- valid -- diente sable, sabertooth blenny, sabretooth blenny
  Plagopterus argentissimus Cope, 1874 -- valid -- woundfin
  Platichthys stellatus (Pallas, 1787) -- valid -- flet étoilé, starry flounder, Starry Flounder
  Platybelone argalus (Lesueur, 1821) -- valid -- agujón aquillado, agujón de quilla, keeltail needlefish
  Platydoras armatulus (Valenciennes in Cuvier and Valenciennes, 1840) -- valid -- southern striped Raphael
  Platygillellus rubrocinctus (Longley, 1934) -- valid -- mirón barreado, saddle stargazer
  Platygobio gracilis (Richardson, 1836) -- valid -- flathead chub
  Platyrhinoidis triseriata (Jordan and Gilbert, 1880) -- valid -- guitarra espinuda, thornback
  Plectobranchus evides Gilbert, 1890 -- valid -- bluebarred prickleback
  Plectranthias garrupellus Robins and Starck, 1961 -- valid -- apricot bass
  Plectrypops retrospinis (Guichenot, 1853) -- valid -- candil cardenal, cardinal soldierfish, goggle-eyed squirrelfish
  Pleurogrammus monopterygius (Pallas, 1810) -- valid -- Atka mackerel
  Pleuronectes glacialis Pallas, 1776 -- invalid -- Arctic flounder, Arctic Flounder, plie arctique
  Pleuronectes putnami (Gill, 1864) -- invalid -- eelback, plie lisse, Smooth Flounder, smooth flounder, smoothback flounder
  Pleuronectes quadrituberculatus Pallas, 1814 -- valid -- Alaska plaice, Alaska Plaice
  Pleuronectidae -- valid -- dabs, halibuts, platijas, plies, righteye flounders, righteyed flounders
  Pleuronichthys coenosus Girard, 1854 -- valid -- C-O sole, C-O Sole, platija de fango, plie vaseuse
  Pleuronichthys decurrens Jordan & Gilbert, 1881 -- valid -- curlfin sole, Curlfin Sole, platija aleta de rizo, plie à nageoires frisées
  Pleuronichthys guttulatus Girard, 1856 -- invalid -- diamond turbot, Diamond Turbot, platija diamante
  Pleuronichthys ocellatus Starks & Thompson, 1910 -- valid -- ocellated turbot, Ocellated Turbot, platija ocelada
  Pleuronichthys ritteri Starks & Morris, 1907 -- valid -- platija moteada, Spotted Turbot, spotted turbot
  Pleuronichthys verticalis Jordan & Gilbert, 1880 -- valid -- hornyhead turbot, Hornyhead Turbot, platija cornuda
  Pliosteostoma lutipinnis (Jordan and Gilbert, 1882) -- valid -- arenquilla aleta amarilla, yellowfin herring
  Poblana alchichica de Buen, 1945 -- valid -- Alchichica silverside, charal de Alchichica
  Poblana ferdebueni Solórzano and López, 1965 -- valid -- charal de Almoloya, Chignahuapan silverside
  Poblana letholepis Alvarez, 1950 -- valid -- charal de La Preciosa, La Preciosa silverside
  Poblana squamata Alvarez, 1950 -- valid -- charal de Quechulac, Quechulac silverside
  Podothecus accipenserinus (Tilesius, 1813) -- valid -- sturgeon poacher
  Podothecus veternus Jordan and Starks, 1895 -- valid -- veteran poacher
  Poecilia butleri Jordan, 1889 -- valid -- Pacific molly, topote del Pacífico
  Poecilia catemaconis Miller, 1975 -- valid -- bicolor molly, topote de Catemaco
  Poecilia chica Miller, 1975 -- valid -- dwarf molly, topote del Purificación
  Poecilia formosa (Girard, 1859) -- valid -- Amazon molly, topote amazona
  Poecilia latipinna (Lesueur, 1821) -- valid -- sailfin molly, topote velo negro
  Poecilia latipunctata Meek, 1904 -- valid -- Tamesi molly, topote del Tamesí
  Poecilia maylandi Meyer, 1983 -- valid -- Balsas molly, topote del Balsas
  Poecilia mexicana Steindachner, 1863 -- valid -- shortfin molly, topote del Atlántico
  Poecilia orri Fowler, 1943 -- valid -- mangrove molly, topote de manglar
  Poecilia petenensis Günther, 1866 -- valid -- Peten molly, topote lacandón
  Poecilia reticulata Peters, 1859 -- valid -- gupi, guppy, millions fish, rainbowfish
  Poecilia sphenops Valenciennes in Cuvier and Valenciennes, 1846 -- valid -- black molly, liberty mollly, liberty molly, Mexican molly, mollie, molly, pointed-mouth molly, topote mexicano
  Poecilia sulphuraria (Alvarez, 1948) -- valid -- sulphur molly, topote de Teapa
  Poecilia velifera (Regan, 1914) -- valid -- giant sailfin, giant sailfin, Mexican sailfin molly, mexican sailfin molly, topote aleta grande, Yucatan molly
  Poeciliidae Garman, 1895 -- valid -- livebearers, livebearing toothcarps, poecilies, poeciliids, topminnows, topotes y espadas
  Poeciliopsis baenschi Meyer, Radda, Riehl and Feichtinger, 1986 -- valid -- golden livebearer, guatopote dorado
  Poeciliopsis balsas Hubbs, 1926 -- valid -- Balsas livebearer, guatopote del Balsas
  Poeciliopsis catemaco Miller, 1975 -- valid -- Catemaco livebearer, guatopote blanco
  Poeciliopsis gracilis (Heckel, 1848) -- valid -- guatopote jarocho, porthole livebearer
  Poeciliopsis hnilickai Meyer and Vogel, 1981 -- valid -- guatopote de Ixtapa, upper Grijalva livebearer
  Poeciliopsis infans (Woolman, 1894) -- valid -- guatopote del Lerma, Lerma livebearer
  Poeciliopsis latidens (Garman, 1895) -- valid -- guatopote del Fuerte, lowland livebearer
  Poeciliopsis lucida Miller, 1960 -- valid -- clearfin livebearer, guatopote del Mocorito
  Poeciliopsis monacha Miller, 1960 -- valid -- guatopote del Mayo, headwater livebearer
  Poeciliopsis occidentalis (Baird and Girard, 1853) -- valid -- Gila topminnow, guatopote de Sonora
  Poeciliopsis presidionis (Jordan and Culver in Jordan, 1895) -- valid -- guatopote de Sinaloa, Sinaloa livebearer
  Poeciliopsis prolifica Miller, 1960 -- valid -- blackstripe livebearer, guatopote culiche
  Poeciliopsis scarlli Meyer, Riehl, Dawes and Dibble, 1985 -- valid -- guatopote michoacano, Michoacan livebearer
  Poeciliopsis turneri Miller, 1975 -- valid -- blackspotted livebearer, guatopote de La Huerta
  Poeciliopsis turrubarensis (Meek, 1912) -- valid -- barred livebearer, guatopote del Pacífico
  Poeciliopsis viriosa Miller, 1960 -- valid -- chubby livebearer, guatopote gordito
  Poecilopsetta beanii (Goode, 1881) -- valid -- deepwater dab, Deepwater Dab, lenguado ojón
  Poecilopsettidae -- valid -- bigeye flounders, lenguados ojones, plies à grands yeux
  Pogonias cromis (Linnaeus, 1766) -- valid -- black drum, corvina negra, tambor negro
  Pogonichthys ciscoides Hopkirk, 1974 -- valid -- Clear Lake splittail
  Pogonichthys macrolepidotus (Ayres, 1854) -- valid -- Sacramento splittail, splittail
  Pollachius virens (Linnaeus, 1758) -- valid -- carbonero, coalfish, goberge, lieu noir, pollock, saithe
  Pollichthys mauli (Poll, 1953) -- valid -- luciérnaga amarilla, stareye lightfish
  Polydactylus approximans (Lay and Bennett, 1839) -- valid -- barbudo seis barbas, blue bobo
  Polydactylus octonemus (Girard, 1858) -- valid -- Atlantic threadfin, barbudo ocho barbas
  Polydactylus oligodon (Günther, 1860) -- valid -- barbudo siete barbas, littlescale threadfin
  Polydactylus opercularis (Gill, 1863) -- valid -- barbudo nueve barbas, yellow bobo
  Polydactylus virginicus (Linnaeus, 1758) -- valid -- barbu, barbudo, barbudo barbú
  Polyipnus clarus Harold, 1994 -- valid -- slope hatchetfish
  Polylepion cruentum Gomon, 1977 -- valid -- bleeding wrasse, vieja sangradora
  Polymixia lowei Günther, 1859 -- valid -- barbudo, barbudo de lo alto, beardfish, cola de maguey
  Polymixiidae -- valid -- barbudos, beardfishes, colas de maguey, poissons à barbe
  Polynemidae -- valid -- barbudos, capitaines, threadfins
  Polyodon spathula (Walbaum, 1792) -- valid -- American paddlefish, paddlefish
  Polyodontidae -- valid -- espátulas, paddlefishes, spatules
  Polyprion americanus (Bloch and Schneider, 1801) -- valid -- wreckfish
  Polyprionidae -- valid -- náufragos, polyprions, wreckfishes
  Pomacanthidae -- valid -- ángeles, angelfishes, demoiselles
  Pomacanthus arcuatus (Linnaeus, 1758) -- valid -- chivirica gris, gallineta café, gray angelfish
  Pomacanthus paru (Bloch, 1787) -- valid -- chivirica francesa, French angelfish, gallineta negra
  Pomacanthus zonipectus (Gill, 1862) -- valid -- ángel de Cortés, Cortez angelfish
  Pomacentridae -- valid -- castañetas y jaquetas, damselfishes, demoiselles, sergents
  Pomadasys bayanus Jordan and Evermann, 1898 -- valid -- purplemouth grunt, roncacho boquimorada
  Pomadasys branickii (Steindachner, 1879) -- valid -- roncacho arenero, sand grunt
  Pomadasys crocro (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- burro grunt, corocoro crocro, ticopa
  Pomadasys macracanthus (Günther, 1864) -- valid -- longspine grunt, roncacho gordo
  Pomadasys panamensis (Steindachner, 1876) -- valid -- Panamic grunt, roncacho mapache
  Pomatomidae -- valid -- anjovas, bluefishes, tassergals
  Pomatomus saltatrix (Linnaeus, 1766) -- valid -- anjova, bluefish
  Pomoxis annularis Rafinesque, 1818 -- valid -- white crappie
  Pomoxis nigromaculatus (Lesueur in Cuvier and Valenciennes, 1829) -- valid -- black crappie, marigane noire, mojarra negra
  Pontinus castor Poey, 1860 -- valid -- longsnout scorpionfish, rascacio de lo alto
  Pontinus furcirhinus Garman, 1899 -- valid -- lapón rojo, red scorpionfish
  Pontinus longispinis Goode and Bean, 1896 -- valid -- lapón mariposa, longspine scorpionfish
  Pontinus nematophthalmus (Günther, 1860) -- valid -- lapón aleta baja, spinythroat scorpionfish
  Pontinus rathbuni Goode and Bean, 1896 -- valid -- highfin scorpionfish
  Pontinus sierra (Gilbert, 1890) -- valid -- lapón manchado, speckled scorpionfish
  Pontinus vaughani Barnhart and Hubbs, 1946 -- valid -- lapón lomo manchado, spotback scorpionfish
  Porichthys analis Hubbs and Schultz, 1939 -- valid -- darkedge midshipman, sapo de luto
  Porichthys ephippiatus Walker and Rosenblatt, 1988 -- valid -- saddle midshipman, sapo ensillado
  Porichthys greenei Gilbert and Starks, 1904 -- valid -- sapo cabeza corta, shorthead midshipman
  Porichthys margaritatus (Richardson, 1844) -- valid -- pearlspot midshipman, sapo luminoso
  Porichthys mimeticus Walker and Rosenblatt, 1988 -- valid -- mimetic midshipman, sapo mimético
  Porichthys myriaster Hubbs and Schultz, 1939 -- valid -- sapo aleta pintada, specklefin midshipman
  Porichthys notatus Girard, 1854 -- valid -- plainfin midshipman, sapo aleta lucia
  Porichthys plectrodon Jordan and Gilbert, 1882 -- valid -- Atlantic midshipman, doradilla, sapo narinero
  Poroclinus rothrocki Bean, 1890 -- valid -- whitebarred prickleback
  Porocottus mednius (Bean in Jordan and Evermann, 1898) -- valid -- Aleutian fringed sculpin
  Potamarius nelsoni (Evermann and Goldsborough, 1902) -- valid -- bagre lacandón, Lacandon sea catfish
  Priacanthidae -- valid -- beauclaires, bigeyes, catalufas, catalufas
  Priacanthus alalaua Jordan and Evermann, 1903 -- valid -- catalufa alalahua, Hawaiian bigeye
  Priacanthus arenatus Cuvier in Cuvier and Valenciennes, 1829 -- valid -- bigeye, catalufa ojón, catalufa toro
  Priapella bonita (Meek, 1904) -- valid -- graceful priapella, guayacón bonito
  Priapella compressa Alvarez, 1948 -- valid -- guayacón de Palenque, Palenque priapella
  Priapella intermedia Alvarez and Carranza, 1952 -- valid -- guayacón de Chimalapa, isthmian priapella
  Priapella olmecae Meyer and Espinosa Pérez, 1990 -- valid -- guayacón olmeca, Olmec priapella
  Prietella lundbergi Walsh and Gilbert, 1995 -- valid -- bagre ciego duende, phantom blindcat
  Prietella phreatophila Carranza, 1954 -- valid -- bagre ciego de Múzquiz, Mexican blind catfish, Mexican blindcat
  Priolepis hipoliti (Metzelaar, 1922) -- valid -- gobio oxidado, rusty goby
  Prionace glauca (Linnaeus, 1758) -- valid -- blue shark, requin bleu, tiburón azul
  Prionotus alatus Goode and Bean, 1883 -- valid -- rubio espinoso, spiny searobin
  Prionotus albirostris Jordan and Bollman, 1890 -- valid -- vaca cariblanca, whitesnout searobin
  Prionotus birostratus Richardson, 1844 -- valid -- twobeak searobin, vaca dospicos
  Prionotus carolinus (Linnaeus, 1771) -- valid -- common searobin, northern searobin
  Prionotus evolans (Linnaeus, 1766) -- valid -- striped searobin
  Prionotus horrens Richardson, 1844 -- valid -- bristly searobin, vaca polla
  Prionotus longispinosus Teague, 1951 -- valid -- bigeye searobin, rubio ojón
  Prionotus martis Ginsburg, 1950 -- valid -- barred searobin, rubio de barras
  Prionotus ophryas Jordan and Swain, 1885 -- valid -- bandtail searobin, rubio cola bandeada
  Prionotus paralatus Ginsburg, 1950 -- valid -- Mexican searobin, rubio mexicano
  Prionotus punctatus (Bloch, 1793) -- valid -- bluewing searobin, espátula gallina, rubio azul, spotted searobin
  Prionotus roseus Jordan and Evermann, 1887 -- valid -- bluespotted searobin, rubio manchas azules
  Prionotus rubio Jordan, 1886 -- valid -- blackfin searobin, blackwing searobin, espátula aletinegra, rubio aletinegra
  Prionotus ruscarius Gilbert and Starks, 1904 -- valid -- rough searobin, vaca rasposa
  Prionotus scitulus Jordan and Gilbert, 1882 -- valid -- leopard searobin, rubio leopardo
  Prionotus stearnsi Jordan and Swain, 1885 -- valid -- rubio pequeño, shortwing searobin
  Prionotus stephanophrys Lockington, 1881 -- valid -- lumptail searobin, vaca voladora
  Prionotus tribulus Cuvier in Cuvier and Valenciennes, 1829 -- valid -- bighead searobin, rubio cabezón
  Prionurus laticlavius (Valenciennes, 1846) -- valid -- cochinito barbero, razor surgeonfish
  Prionurus punctatus Gill, 1862 -- valid -- cochinito punteado, yellowtail surgeon, yellowtail surgeonfish
  Pristidae Bonaparte, 1838 -- valid -- peces sierra, poissons-scies, sawfishes
  Pristigasteridae -- valid -- ilishas, longfin herrings, pellonas, pristigastéridés, pristigasterids, sardinas machete, sawbelly herrings
  Pristigenys alta (Gill, 1862) -- valid -- catalufa de lo alto, short bigeye
  Pristigenys serrula (Gilbert, 1891) -- valid -- catalufa semáforo, popeye catalufa
  Pristipomoides aquilonaris (Goode and Bean, 1896) -- valid -- huachinango navaja, wenchman
  Pristipomoides freemani Anderson, 1966 -- valid -- slender wenchman, yelloweye wenchman
  Pristipomoides macrophthalmus (Müller and Troschel in Schomburgk, 1848) -- valid -- cardinal snapper, pargo panchito, voraz
  Pristis pectinata Latham, 1794 -- valid -- pez sierra, pez sierra peine, smalltooth sawfish, wide sawfish
  Pristis pristis (Linnaeus, 1758) -- valid -- common sawfish, largetooth sawfish, pez sierra común, sawfish
  Profundulidae Hoedeman and Bronner, 1951 -- valid -- escamudos, Middle American killifishes, profundulidés
  Profundulus candalarius Hubbs, 1924 -- valid -- escamudo de Comitán, headwater killifish
  Profundulus hildebrandi Miller, 1950 -- valid -- Chiapas killifish, escamudo de San Cristóbal
  Profundulus labialis (Günther, 1866) -- valid -- escamudo bocón, largelip killifish
  Profundulus punctatus (Günther, 1866) -- valid -- brownspotted killifish, escamudo pinto
  Prognathodes aculeatus (Poey, 1860) -- valid -- longsnout butterflyfish, mariposa narigona, parche narizón
  Prognathodes aya (Jordan, 1886) -- valid -- bank butterflyfish, mariposa de banco
  Prognathodes falcifer (Hubbs and Rechnitzer, 1958) -- valid -- mariposa guadaña, scythe butterflyfish
  Prognathodes guyanensis (Durand, 1960) -- valid -- Guyana butterflyfish
  Prognichthys occidentalis Parin, 1999 -- valid -- bluntnose flyingfish, volador chato, volador ñato
  Prognichthys sealei Abe, 1955 -- valid -- sailor flyingfish, volador marinero
  Prognichthys tringa Breder, 1928 -- valid -- Panamic flyingfish, volador panámico
  Pronotogrammus eos Gilbert, 1890 -- valid -- bigeye bass, serrano ojón
  Pronotogrammus martinicensis (Guichenot, 1868) -- valid -- roughtongue bass, serrano lengua rasposa
  Pronotogrammus multifasciatus Gill, 1863 -- valid -- serrano baga, threadfin bass
  Prosopium abyssicola (Snyder, 1919) -- valid -- Bear Lake whitefish
  Prosopium coulterii (Eigenmann and Eigenmann, 1892) -- valid -- pygmy whitefish
  Prosopium cylindraceum (Pennant, 1784) -- valid -- ménomini rond, round whitefish
  Prosopium gemmifer (Snyder, 1919) -- valid -- Bonneville cisco
  Prosopium spilonotus (Snyder, 1919) -- valid -- Bonneville whitefish
  Prosopium williamsoni (Girard, 1856) -- valid -- mountain whitefish
  Proterorhinus marmoratus (Pallas, 1814) -- valid -- tubenose blenny, tubenose goby
  Protomyctophum crockeri (Bolin, 1939) -- valid -- California flashlightfish, flashlightfish, linternilla luciérnaga
  Psenes cyanophrys Valenciennes in Cuvier and Valenciennes, 1833 -- valid -- derivante rayado, freckled driftfish, pastorcillo amarillento
  Psenes maculatus Lütken, 1880 -- valid -- silver driftfish
  Psenes pellucidus Lütken, 1880 -- valid -- bluefin driftfish, derivante aleta azul
  Psenes sio Haedrich, 1970 -- valid -- derivante dos espinas, twospine driftfish
  Psettichthys melanostictus Girard, 1854 -- valid -- sand sole, Sand Sole, sole de sable
  Pseudobalistes naufragium (Jordan and Starks in Jordan, 1895) -- valid -- blunthead triggerfish, cochito bota
  Pseudocarcharias kamoharai (Matsubara, 1936) -- valid -- crocodile shark, tiburón cocodrilo
  Pseudocarchariidae Compagno, 1973 -- valid -- crocodile sharks, requins-crocodiles, tiburones cocodrilo
  Pseudogramma gregoryi (Breder, 1927) -- valid -- jaboncillo arrecifal, reef bass
  Pseudogramma thaumasium (Gilbert in Jordan and Evermann, 1900) -- valid -- jaboncillo ocelado, Pacific reef bass
  Pseudojuloides inornatus (Gilbert, 1890) -- valid -- Cape wrasse, señorita del Cabo
  Pseudomyrophis fugesae McCosker, Böhlke and Böhlke, 1989 -- valid -- diminutive worm eel
  Pseudomyrophis micropinna Wade, 1946 -- valid -- plain worm eel, tieso enano
  Pseudopentaceros wheeleri Hardy, 1983 -- valid -- longfin armorhead, North Pacific armorhead
  Pseudophallus starksii (Jordan and Culver in Jordan, 1895) -- valid -- pez pipa de río, yellowbelly pipefish
  Pseudopleuronectes americanus (Walbaum, 1792) -- valid -- blackback, Georges Bank flounder, lemon sole, plie rouge, rough flounder, winter flounder, Winter Flounder
  Pseudotriakidae Gill, 1893 -- valid -- false cat sharks, musolones, requins à longue dorsale
  Pseudotriakis microdon Brito Capello, 1868 -- valid -- falsa gata, false cat shark
  Pseudupeneus grandisquamis (Gill, 1863) -- valid -- bigscale goatfish, chivo, chivo escamudo
  Pseudupeneus maculatus (Bloch, 1793) -- valid -- chivo manchado, salmonete colorado, spotted goatfish
  Psilotris alepis Ginsburg, 1953 -- valid -- gobio de poceta, gobio sin escamas, scaleless goby, scaleless goby
  Psilotris batrachodes Böhlke, 1963 -- valid -- gobio de sapo, gobio sapito, toadfish goby, toadfish goby
  Psilotris celsus Böhlke, 1963 -- valid -- gobio espina alta, highspine goby, highspine goby
  Psychrolutes paradoxus Günther, 1861 -- valid -- tadpole sculpin
  Psychrolutes sigalutes (Jordan and Starks, 1895) -- invalid -- soft sculpin
  Psychrolutidae -- valid -- cabezas gordas, chabots veloutés, fathead sculpins, flathead sculpins
  Pteraclis aesticola (Jordan and Snyder, 1901) -- valid -- abanico del Pacífico, Pacific fanfish
  Ptereleotris calliura (Jordan and Gilbert, 1882) -- valid -- blue dartfish, gobio dardo azul
  Ptereleotris carinata Bussing, 2001 -- valid -- gobio dardo panámico, Panamic dartfish
  Ptereleotris helenae (Randall, 1968) -- valid -- gobio azul, hovering dartfish, hovering goby
  Pterois volitans (Linnaeus, 1758) -- valid -- firefish, lionfish, ornate butterfly-cod, red firefish, red lionfish, turkeyfish, zebrafish
  Pteromylaeus asperrimus (Gilbert in Jordan and Evermann, 1898) -- valid -- águila cueruda, rough eagle ray
  Pteronotropis euryzonus (Suttkus, 1955) -- valid -- broadstripe shiner
  Pteronotropis grandipinnis (Jordan, 1877) -- valid -- Apalachee shiner
  Pteronotropis hubbsi (Bailey and Robison, 1978) -- valid -- bluehead shiner
  Pteronotropis hypselopterus (Günther, 1868) -- valid -- sailfin shiner
  Pteronotropis merlini (Suttkus and Mettee, 2001) -- valid -- orangetail shiner
  Pteronotropis signipinnis (Bailey and Suttkus, 1952) -- valid -- flagfin shiner
  Pteronotropis welaka (Evermann and Kendall, 1898) -- valid -- bluenose shiner
  Pteroplatytrygon violacea (Bonaparte, 1832) -- valid -- pelagic stingray, raya látigo obispo
  Pterycombus brama Fries, 1837 -- valid -- Atlantic fanfish, silver sea bream
  Pterygoplichthys anisitsi Eigenmann and Kennedy, 1903 -- valid -- southern sailfin catfish
  Pterygoplichthys disjunctivus (Weber, 1991) -- valid -- vermiculated sailfin catfish
  Pterygoplichthys multiradiatus (Hancock, 1828) -- valid -- butterfly pleco, Orinoco sailfin catfish, plecóstoma del Orinoco, sailfin catfish
  Pterygoplichthys pardalis (Castelnau, 1855) -- valid -- Amazon sailfin catfish
  Ptilichthyidae Jordan and Gilbert, 1883 -- valid -- fouette-queues, peces pua, quillfishes
  Ptilichthys goodei Bean, 1881 -- valid -- quillfish
  Ptychocheilus grandis (Ayres, 1854) -- valid -- Sacramento pikeminnow, Sacramento squawfish
  Ptychocheilus lucius Girard, 1856 -- valid -- carpa gigante del Colorado, Colorado pikeminnow, Colorado squawfish
  Ptychocheilus oregonensis (Richardson, 1836) -- valid -- northern pikeminnow, northern squawfish
  Ptychocheilus umpquae Snyder, 1908 -- valid -- Umpqua pikeminnow, Umpqua squawfish
  Pungitius pungitius (Linnaeus, 1758) -- valid -- épinoche à neuf épines, ninespine stickleback, tenspined stickleback
  Pycnomma semisquamatum Rutter, 1904 -- valid -- gobio furtivo, secret goby
  Pylodictis olivaris (Rafinesque, 1818) -- valid -- bagre piltonte, flathead catfish
  Pythonichthys asodes Rosenblatt and Rubinoff, 1972 -- valid -- anguila de fango del Pacífico, Pacific mud eel
  Quassiremus nothochir (Gilbert, 1890) -- valid -- redsaddled snake eel, tieso bisagra
  Quietula y-cauda (Jenkins and Evermann, 1889) -- valid -- gobio sombreado, shadow goby
  Rachycentridae -- valid -- cobias, cobias, cobilos
  Rachycentron canadum (Linnaeus, 1766) -- valid -- cobia, cobia
  Radulinus asprellus Gilbert, 1890 -- valid -- charrasco flaco, slim sculpin
  Radulinus boleoides Gilbert in Jordan and Evermann, 1898 -- valid -- darter sculpin
  Radulinus vinculus Bolin, 1950 -- valid -- smoothgum sculpin
  Raja ackleyi Garman, 1881 -- valid -- ocellate skate, raya ocelada
  Raja binoculata Girard, 1855 -- valid -- big skate, raya bruja gigante
  Raja cortezensis McEachran and Miyake, 1988 -- valid -- Cortez skate, raya de Cortés
  Raja eglanteria Bosc in Lacepède, 1800 -- valid -- clearnose skate, raya naricita
  Raja equatorialis Jordan and Bollman, 1890 -- valid -- equatorial skate, raya ecuatorial
  Raja inornata Jordan and Gilbert, 1881 -- valid -- California skate, raya de California
  Raja rhina Jordan and Gilbert, 1880 -- valid -- longnose skate, raya narigona
  Raja stellulata Jordan and Gilbert, 1880 -- valid -- raya estrellada, starry skate
  Raja texana Chandler, 1921 -- valid -- raya tigre, roundel skate
  Raja velezi Chirichigno F., 1973 -- valid -- rasptail skate, raya chillona
  Rajidae Blainville, 1816 -- valid -- raies, rayas, rays, skates
  Ranzania laevis (Pennant, 1776) -- valid -- mola flaca, pez luna colitruncado, slender mola
  Rastrinus scutiger (Bean, 1890) -- valid -- roughskin sculpin
  Rathbunella alleni Gilbert, 1904 -- valid -- ronco pelón aletirrayada, rough ronquil, rough ronquil, stripefin ronquil
  Rathbunella hypoplecta (Gilbert in Soldatov and Lindberg, 1890) -- valid -- bluebanded ronquil, ronco pelón rayado, smooth ronquil
  Regalecidae -- valid -- oarfishes, peces remo, régalées
  Regalecus glesne Ascanius, 1772 -- valid -- oarfish, rey de los arenques
  Reinhardtius hippoglossoides (Walbaum, 1792) -- valid -- flétan du Groenland, greeenland halibut, Greenland Halibut, Greenland halibut, Greenland turbot, Newfoundland turbot, platija negra, turbot
  Relictus solitarius Hubbs and Miller, 1972 -- valid -- relict dace
  Remora australis (Bennett, 1840) -- valid -- rémora ballenera, whalesucker
  Remora brachyptera (Lowe, 1839) -- valid -- pez pega robusto, rémora robusta, spearfish remora
  Remora osteochir (Cuvier, 1829) -- valid -- marlinsucker, pez pega disco, rémora marlinera
  Remora remora (Linnaeus, 1758) -- valid -- common remora, remora, rémora tiburonera
  Rhacochilus toxotes Agassiz, 1854 -- valid -- mojarra labios de hule, rubberlip seaperch
  Rhacochilus vacca (Girard, 1855) -- valid -- mojarra muellera, pile perch
  Rhamdia guatemalensis (Günther, 1864) -- valid -- juil descolorido, pale catfish
  Rhamdia laticauda (Kner, 1858) -- valid -- juil de Jamapa, rock catfish
  Rhamdia macuspanensis Weber and Wilkens, 1998 -- valid -- juil ciego olmeca, Olmec blind catfish
  Rhamdia parryi Eigenmann and Eigenmann, 1888 -- valid -- juil de Tonalá, Tonala catfish
  Rhamdia reddelli Miller, 1984 -- valid -- blindwhiskered catfish, juil ciego
  Rhamdia zongolicensis Wilkens, 1993 -- valid -- juil oaxaqueño, Oaxaca catfish
  Rhamphocottidae -- valid -- chabots grogneurs, charrascos gruñones, grunt sculpins
  Rhamphocottus richardsonii Günther, 1874 -- valid -- grunt sculpin
  Rhincodon typus Smith, 1828 -- valid -- dámero, requin baleine, tiburón ballena, whale shark
  Rhincodontidae -- valid -- requins baleine, requins-baleines, tiburones ballena, whale sharks
  Rhinichthys atratulus (Hermann, 1804) -- valid -- blacknose dace, eastern blacknose dace, naseux noir, naseux noir de l'est
  Rhinichthys cataractae (Valenciennes in Cuvier and Valenciennes, 1842) -- valid -- carpita rinconera, longnose dace, naseux des rapides
  Rhinichthys cobitis (Girard, 1856) -- valid -- carpita locha, loach dace, loach minnow
  Rhinichthys deaconi Miller, 1984 -- valid -- Las Vegas dace
  Rhinichthys evermanni Snyder, 1908 -- valid -- Umpqua dace
  Rhinichthys falcatus (Eigenmann and Eigenmann, 1893) -- valid -- leopard dace
  Rhinichthys obtusus Agassiz, 1854 -- valid -- western blacknose dace
  Rhinichthys osculus (Girard, 1856) -- valid -- carpita pinta, speckled dace
  Rhinichthys umatilla (Gilbert and Evermann, 1894) -- valid -- Umatilla dace
  Rhinobatidae Müller and Henle, 1837 -- valid -- guitares de mer, guitarfishes, guitarras
  Rhinobatos glaucostigma (Jordan and Gilbert, 1883) -- valid -- guitarra punteada, speckled guitarfish
  Rhinobatos lentiginosus Garman, 1880 -- valid -- Atlantic guitarfish, guitarra diablito
  Rhinobatos leucorhynchus (Günther, 1867) -- valid -- guitarra trompa blanca, whitesnout guitarfish
  Rhinobatos productus (Ayres, 1854) -- valid -- guitarra viola, shovelnose guitarfish
  Rhinogobiops nicholsii (Bean, 1882) -- valid -- blackeye goby, gobio triste
  Rhinoptera bonasus (Mitchill, 1815) -- valid -- cara de vaca, cownose ray, gavilán cubanito
  Rhinoptera steindachneri Evermann and Jenkins, 1891 -- valid -- gavilán dorado, golden cownose ray
  Rhinopteridae Jordan and Evermann, 1896 -- valid -- cow-nose rays, cownose rays, mourines, rayas gavilán
  Rhizoprionodon longurio (Jordan and Gilbert, 1882) -- valid -- cazón bironche, Pacific sharpnose shark
  Rhizoprionodon porosus (Poey, 1861) -- valid -- Caribbean sharpnose shark, cazón antillano, cazón de ley
  Rhizoprionodon terraenovae (Richardson, 1836) -- valid -- Atlantic sharpnose shark, cazón de ley, cazón de playa
  Rhodeus sericeus (Pallas, 1776) -- valid -- bitterling
  Rhodymenichthys dolichogaster (Pallas, 1814) -- valid -- stippled gunnel
  Rhomboplites aurorubens (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- besugo, cotorro, vermilion snapper
  Rhynchoconger flavus (Goode and Bean, 1896) -- valid -- congrio amarillo, yellow conger
  Rhynchoconger gracilior (Ginsburg, 1951) -- valid -- congrina filamentosa, congrio grácil, whiptail conger
  Rhynchoconger nitens (Jordan and Bollman, 1890) -- valid -- congrio estilete, needletail conger
  Richardsonius balteatus (Richardson, 1836) -- valid -- redside shiner
  Richardsonius egregius (Girard, 1858) -- valid -- Lahontan redside, Lahontan shiner
  Rimicola cabrilloi Briggs, 2002 -- valid -- Channel Islands clingfish
  Rimicola dimorpha Briggs, 1955 -- valid -- chupapiedra chiquita, southern clingfish
  Rimicola eigenmanni (Gilbert, 1890) -- valid -- chupiedra flaca, slender clingfish
  Rimicola muscarum (Meek and Pierson, 1895) -- valid -- chupapiedra sargacera, kelp clingfish
  Rimicola sila Briggs, 1955 -- valid -- chupapiedra de Guadalupe, Guadalupe clingfish
  Risor ruber (Rosén, 1911) -- valid -- gobio boquita, gobio de boca chica, tusked goby
  Rivulus hartii (Boulenger, 1890) -- valid -- giant rivulus, Hart's rivulus, rainfish, Trinidad rivulus
  Rivulus marmoratus Poey, 1880 -- valid -- almirante de manglar, mangrove rivulus, Matanzas rivulus, rivulo de mangle, rivulo matancero, rivulus
  Rivulus tenuis (Meek, 1904) -- valid -- almirante del Hule, Maya rivulus
  Roeboides bouchellei Fowler, 1923 -- valid -- crystal tetra, sardinita cristal
  Roncador stearnsii (Steindachner, 1876) -- valid -- roncador aleta manchada, spotfin croaker
  Ronquilus jordani (Gilbert, 1889) -- valid -- northern ronquil
  Ruscarius creaseri (Hubbs, 1926) -- valid -- charrasco cachetirugoso, roughcheek sculpin
  Ruscarius meanyi Jordan and Starks, 1895 -- valid -- Puget Sound sculpin
  Ruvettus pretiosus Cocco, 1833 -- valid -- escolar, escolar clavo, oilfish
  Rypticus bicolor Valenciennes, 1846 -- valid -- jabonero moteado, mottled soapfish, pacific soapfish, pacific soapfish
  Rypticus bistrispinus (Mitchill, 1818) -- valid -- freckled soapfish, jaboncillo pecoso, jabonero pecoso
  Rypticus courtenayi McCarthy, 1979 -- valid -- jabonero de Socorro, Socorro soapfish
  Rypticus maculatus Holbrook, 1855 -- valid -- jabonero albipunteado, whitespotted soapfish
  Rypticus nigripinnis Gill, 1861 -- valid -- jabonero doble punteado, twice-spotted soapfish
  Rypticus saponaceus (Bloch and Schneider, 1801) -- valid -- greater soapfish, jaboncillo máximo, jabonero grande
  Rypticus subbifrenatus Gill, 1861 -- valid -- jaboncillo punteado, jabonero punteado, spotted soapfish
  Salmo salar Linnaeus, 1758 -- valid -- Atlantic salmon, saumon atlantique
  Salmo trutta Linnaeus, 1758 -- valid -- brown trout, truite brune
  Salmonidae -- valid -- salmonids, salmons, trouts, trouts and salmons, truchas y salmones, truites et saumons
  Salvelinus alpinus (Linnaeus, 1758) -- valid -- Arctic char, omble chevalier
  Salvelinus confluentus (Suckley, 1859) -- valid -- bull trout
  Salvelinus fontinalis (Mitchill, 1814) -- valid -- aurora trout, brook trout, charr, coaster brook trout, omble aurora, omble de fontaine, salter, sea trout, trucha de arroyo
  Salvelinus malma (Walbaum in Artedi, 1792) -- valid -- Dolly Varden
  Salvelinus namaycush (Walbaum in Artedi, 1792) -- valid -- lake trout, touladi
  Sander canadensis (Griffith and Smith, 1834) -- valid -- doré noir, sauger
  Sander lucioperca (Linnaeus, 1758) -- valid -- pikeperch, sudak, zander
  Sander vitreus (Mitchill, 1818) -- valid -- doré jaune, walleye
  Sanopus johnsoni Collette and Starck in Collette, 1974 -- valid -- Cozumel toadfish, sapo de Cozumel
  Sanopus reticulatus Collette, 1983 -- valid -- reticulate toadfish, sapo reticulado
  Sanopus splendidus Collette, Starck and Phillips in Collette, 1974 -- valid -- sapo magnífico, splendid toadfish
  Sarda chiliensis (Cuvier in Cuvier and Valenciennes, 1832) -- valid -- bonite du Pacifique oriental, bonito del Pacifico oriental, bonito del Pacífico oriental, eastern Pacific bonito, Pacific bonito
  Sarda orientalis (Temminck and Schlegel, 1844) -- valid -- bonito mono, bonito oriental, oriental bonito, striped bonito
  Sarda sarda (Bloch, 1793) -- valid -- Atlantic bonito, bloater, bone jack, bonite à dos rayé, bonito, bonito Atlántico, bonito del Atlántico, Boston mackerel, common bonito
  Sardinella aurita Valenciennes in Cuvier and Valenciennes, 1847 -- valid -- round sardinella, sardina de España, sardina española, Spanish sardine
  Sardinops sagax (Jenyns, 1842) -- valid -- Pacific sardine, sardina monterrey, South American pilchard
  Sargocentron bullisi (Woods, 1955) -- valid -- carajuelo profundo, deepwater squirrelfish
  Sargocentron coruscum (Poey, 1860) -- valid -- carajuelo de arrecife, reef squirrelfish
  Sargocentron poco (Woods, 1965) -- valid -- saddle squirrelfish
  Sargocentron suborbitalis (Gill, 1863) -- valid -- candil sol, tinsel squirrelfish
  Sargocentron vexillarium (Poey, 1860) -- valid -- carajuelo oscuro, dusky squirrelfish
  Sarotherodon melanotheron Rüppell, 1852 -- valid -- blackchin mouthbreeder, blackchin tilapia
  Satan eurystomus Hubbs and Bailey, 1947 -- valid -- widemouth blindcat
  Saurenchelys cognita Smith, 1989 -- valid -- longface eel, serpentina noble
  Saurida brasiliensis Norman, 1935 -- valid -- chile brasileño, chile brasileño, lagarto brasileño, largescale lizardfish
  Saurida caribbaea Breder, 1927 -- valid -- chile caribeño, lagarto caribeño, smallscale lizardfish
  Saurida normani Longley, 1935 -- valid -- chile espinoso, lagarto espinoso, shortjaw lizardfish
  Scaphirhynchus albus (Forbes and Richardson, 1905) -- valid -- pallid sturgeon
  Scaphirhynchus platorynchus (Rafinesque, 1820) -- valid -- shovelnose sturgeon
  Scaphirhynchus suttkusi Williams and Clemmer, 1991 -- valid -- Alabama sturgeon
  Scardinius erythrophthalmus (Linnaeus, 1758) -- valid -- pearl roach, rudd
  Scaridae Rafinesque, 1810 -- valid -- loros, parrotfishes, poissons-perroquets
  Scartella cristata (Linnaeus, 1758) -- valid -- blenio peineta, borracho peineta, molly miller
  Scarus coelestinus Valenciennes in Cuvier and Valenciennes, 1840 -- valid -- loro de medianoche, midnight parrotfish
  Scarus coeruleus (Bloch, 1786) -- valid -- blue parrotfish, loro azul
  Scarus compressus (Osburn and Nichols, 1916) -- valid -- azure parrotfish, loro chato
  Scarus ghobban Forsskål, 1775 -- valid -- bluechin parrotfish, flame parrotfish, loro barbazul
  Scarus guacamaia Cuvier, 1829 -- valid -- loro guacamayo, rainbow parrotfish
  Scarus iseri (Bloch, 1789) -- valid -- loro listado, striped parrotfish
  Scarus perrico Jordan and Gilbert, 1882 -- valid -- bumphead parrotfish, loro jorobado, perrico
  Scarus rubroviolaceus Bleeker, 1847 -- valid -- bicolor parrotfish, loro bicolor
  Scarus taeniopterus Desmarest in Bory de Saint-Vincent, 1831 -- valid -- loro princesa, princess parrotfish
  Scarus vetula Bloch and Schneider, 1801 -- valid -- loro reina, queen parrotfish
  Schultzea beta (Hildebrand in Longley and Hildebrand, 1940) -- valid -- school bass, serrano escolar, serrano sin dientes
  Sciadeops troschellii (Gill, 1863) -- invalid -- bagre chili, chili sea catfish
  Sciades hymenorrhinos (Bleeker, 1862) -- valid -- bagre moreno, flapnose sea catfish
  Sciades hymenorrhinus (Bleeker, 1862) -- invalid -- bagre moreno, flapnose sea catfish
  Sciades troschelii Gill, 1863 -- valid -- bagre chili, chili sea catfish
  Sciaenidae -- valid -- coakers, corbs, corvinas y berrugatas, courbines, croakers, drums, drums and croakers, maigres, ombrines, roncadores, tambours
  Sciaenops ocellatus (Linnaeus, 1766) -- valid -- corvineta ocelada, red drum
  Scomber australasicus Cuvier in Cuvier and Valenciennes, 1832 -- valid -- blue mackerel, caballa pintoja, Japanese mackerel, macarela pintoja, maquereau tacheté, slimy mackerel, spotted chub mackerel, spotted mackerel
  Scomber colias Gmelin, 1789 -- valid -- Altantic chub mackerel, Atlantic chub mackerel, bullseye hardhead, macarela estornino, maquereau blanc
  Scomber japonicus Houttuyn, 1782 -- valid -- chub mackerel, common mackerel, estornino, macarela estornino, maquereau blanc, maquereau Espagnol, Pacific chub mackerel, Pacific mackerel
  Scomber scombrus Linnaeus, 1758 -- valid -- Atlantic mackerel, caballa del Atlántico, maquereau bleu, maquereau commun
  Scomberesocidae -- valid -- balaous, papardas, sauries, saury pikes
  Scomberesox saurus (Walbaum, 1792) -- valid -- Atlantic saury, balaou, sauro atlántico, skipper garfish
  Scomberomorus brasiliensis Collette, Russo and Zavala-Camin, 1978 -- valid -- serra, serra, serra Spanish mackerel, serro Spanish mackerel, thazard tacheté du sud
  Scomberomorus cavalla (Cuvier, 1829) -- valid -- carite lucio, carito, king mackerel, sierra, thazard serra
  Scomberomorus concolor (Lockington, 1879) -- valid -- carite de Monterey, Gulf sierra, Monterey Spanish mackerel, sierra golfina, thazard de Monterey
  Scomberomorus maculatus (Mitchill, 1815) -- valid -- Atlantic Spanish mackerel, carite Atlántico, serrucho, sierra común, Spanish mackerel, thazard Atlantique
  Scomberomorus regalis (Bloch, 1793) -- valid -- carite chinigua, cero, painted mackerel, pintada, sierra, thazard franc
  Scomberomorus sierra Jordan and Starks in Jordan, 1895 -- valid -- carite sierra, Mexican sierra, Pacific sierra, sierra del Pacífico, thazard sierra
  Scombridae -- valid -- albacores, bonitos, macarelas, mackerels, maquereaux, tunas
  Scopelarchidae -- valid -- ojos de perla, pearleyes, yeux-perlés
  Scophthalmidae -- valid -- rodaballos, scophthalmidés, scophthalmids, turbots
  Scophthalmus aquosus (Mitchill, 1815) -- valid -- brill, sand dab, spotted flounder, turbot de sable, Windowpane, windowpane
  Scorpaena agassizii Goode and Bean, 1896 -- valid -- escorpión aleta larga, longfin scorpionfish
  Scorpaena albifimbria Evermann and Marsh, 1900 -- valid -- coral scorpionfish, escorpión coralino, lesser scorpionfish, rascacio coralino
  Scorpaena bergii Evermann and Marsh, 1900 -- valid -- escorpión gansito, goosehead scorpionfish
  Scorpaena brachyptera Eschmeyer, 1965 -- valid -- shortfin scorpionfish
  Scorpaena brasiliensis Cuvier in Cuvier and Valenciennes, 1829 -- valid -- barbfish, escorpión pardo, goosehead scorpionfish, rascacio ganso
  Scorpaena calcarata Goode and Bean, 1882 -- valid -- escorpión pelón, rascacio pelón, smoothhead scorpionfish
  Scorpaena dispar Longley and Hildebrand, 1940 -- valid -- escorpión jorobado, hunchback scorpionfish
  Scorpaena elachys Eschmeyer, 1965 -- valid -- dwarf scorpionfish
  Scorpaena grandicornis Cuvier in Cuvier and Valenciennes, 1829 -- valid -- escorpión plumeado, plumed scorpionfish, poison grouper, rascacio cornudo
  Scorpaena guttata Girard, 1854 -- valid -- California scorpionfish, escorpión californiano, finscaled scoprionfish
  Scorpaena histrio Jenyns, 1840 -- valid -- escorpión juguetón, player scorpionfish
  Scorpaena inermis Cuvier in Cuvier and Valenciennes, 1829 -- valid -- escorpión hongo, mushroom scorpionfish, rascacio bongo
  Scorpaena isthmensis Meek and Hildebrand, 1928 -- valid -- escorpión mejilla lisa, smoothcheek scorpionfish
  Scorpaena mystes Jordan and Starks in Jordan, 1895 -- valid -- escorpión roquero, lapon, stone scorpionfish
  Scorpaena plumieri Bloch, 1789 -- valid -- escorpión negro, rascacio multicolor, spotted scorpionfish
  Scorpaena russula Jordan and Bollman, 1890 -- valid -- escorpión sapo, reddish scorpionfish
  Scorpaena sonorae Jenkins and Evermann, 1889 -- valid -- escorpión de Sonora, Sonora scorpionfish
  Scorpaenichthys marmoratus (Ayres, 1854) -- valid -- cabezon, cabezón
  Scorpaenidae -- valid -- escorpiones y rocotes, firefishes, goblinfishes, rascasses, rockfishes, scorpènes, scorpénidés, scorpionfishes
  Scorpaenodes caribbaeus Meek and Hildebrand, 1928 -- valid -- escorpión de arrecife, reef scorpionfish
  Scorpaenodes tredecimspinosus (Metzelaar, 1919) -- valid -- deepreef scorpionfish, escorpión espinoso, rascacio espinoso
  Scorpaenodes xyris (Jordan and Gilbert, 1882) -- valid -- escorpión arcoiris, rainbow scorpionfish
  Scuticaria tigrina (Lesson, 1828) -- valid -- morena atigrada, tiger reef eel
  Scyliorhinidae Gill, 1862 -- valid -- cat sharks, catsharks, pejegatos, roussettes
  Scyliorhinus retifer (Garman, 1881) -- valid -- alitán mallero, chain catshark, chain dogfish
  Scytalichthys miurus (Jordan and Gilbert, 1882) -- valid -- shorttail viper eel, tieso víbora
  Scytalina cerdale Jordan and Gilbert, 1880 -- valid -- graveldiver
  Scytalinidae Jordan and Evermann, 1898 -- valid -- blennies fouisseuses, graveldivers, peces topo
  Sebastes aleutianus (Jordan and Evermann, 1898) -- valid -- rougheye rockfish
  Sebastes alutus (Gilbert, 1890) -- valid -- Pacific ocean perch
  Sebastes atrovirens (Jordan and Gilbert, 1880) -- valid -- kelp rockfish, rocote sargacero
  Sebastes auriculatus Girard, 1854 -- valid -- brown rockfish, rocote moreno
  Sebastes aurora (Gilbert, 1890) -- valid -- aurora rockfish
  Sebastes babcocki (Thompson, 1915) -- valid -- redbanded rockfish
  Sebastes borealis Barsukov, 1970 -- valid -- shortraker rockfish
  Sebastes brevispinis (Bean, 1884) -- valid -- silvergray rockfish
  Sebastes carnatus (Jordan and Gilbert, 1880) -- valid -- gopher rockfish, rocote amarillo
  Sebastes caurinus Richardson, 1844 -- valid -- copper rockfish, rocote cobrizo
  Sebastes chlorostictus (Jordan and Gilbert, 1880) -- valid -- greenspotted rockfish, rocote verde
  Sebastes chrysomelas (Jordan and Gilbert, 1881) -- valid -- black-and-yellow rockfish, rocote mulato
  Sebastes ciliatus (Tilesius, 1813) -- valid -- dusky rockfish
  Sebastes constellatus (Jordan and Gilbert, 1880) -- valid -- rocote estrellado, starry rockfish
  Sebastes cortezi (Beebe and Tee-Van, 1938) -- valid -- Cortez rockfish, rocote de Cortés
  Sebastes crameri (Jordan in Gilbert, 1897) -- valid -- darkblotched rockfish
  Sebastes dallii (Eigenmann and Beeson, 1894) -- valid -- calico rockfish, rocote algodón
  Sebastes diploproa (Gilbert, 1890) -- valid -- rocote doble hocico, splitnose rockfish
  Sebastes elongatus Ayres, 1859 -- valid -- greenstriped rockfish, rocote reina
  Sebastes emphaeus (Starks, 1911) -- valid -- Puget Sound rockfish
  Sebastes ensifer Chen, 1971 -- valid -- rocote espada, swordspine rockfish
  Sebastes entomelas (Jordan and Gilbert, 1880) -- valid -- rocote viuda, widow rockfish
  Sebastes eos (Eigenmann and Eigenmann, 1890) -- valid -- pink rockfish, rocote Santa María
  Sebastes exsul Chen, 1971 -- valid -- buccaneer rockfish, rocote bucanero
  Sebastes fasciatus Storer, 1854 -- valid -- Acadian redfish, Acadian rockfish, Labrador redfish, sébaste acadien
  Sebastes flavidus (Ayres, 1862) -- valid -- yellowtail rockfish
  Sebastes gilli (Eigenmann, 1891) -- valid -- bronzespotted rockfish, rocote bronceado
  Sebastes glaucus Hilgendorf, 1880 -- valid -- gray rockfish
  Sebastes goodei (Eigenmann and Eigenmann, 1890) -- valid -- chilipepper, rocote pimienta
  Sebastes helvomaculatus Ayres, 1859 -- valid -- rosethorn rockfish
  Sebastes hopkinsi (Cramer, 1895) -- valid -- rocote a cuadros, squarespot rockfish
  Sebastes jordani (Gilbert, 1896) -- valid -- rocote pancita, shortbelly rockfish
  Sebastes lentiginosus Chen, 1971 -- valid -- freckled rockfish, rocote pecoso
  Sebastes levis (Eigenmann and Eigenmann, 1889) -- valid -- cowcod, rocote vaquilla
  Sebastes macdonaldi (Eigenmann and Beeson, 1893) -- valid -- Mexican rockfish, rocote mexicano
  Sebastes maliger (Jordan and Gilbert, 1880) -- valid -- quillback rockfish
  Sebastes melanops Girard, 1856 -- valid -- black rockfish
  Sebastes melanosema Lea and Fitch, 1979 -- valid -- rocote semáforo, semaphore rockfish
  Sebastes melanostomus (Eigenmann and Eigenmann, 1890) -- valid -- blackgill rockfish, rocote agalla negra
  Sebastes mentella Travin, 1951 -- valid -- deepwater redfish, deepwater rockfish, sébaste atlantique
  Sebastes miniatus (Jordan and Gilbert, 1880) -- valid -- rocote bermejo, vermilion rockfish
  Sebastes moseri Eitner in Eitner, Kimbrell and Vetter, 1999 -- valid -- rocote manchas blancas, whitespotted rockfish
  Sebastes mystinus (Jordan and Gilbert, 1881) -- valid -- blue rockfish, rocote azul
  Sebastes nebulosus Ayres, 1854 -- valid -- China rockfish
  Sebastes nigrocinctus Ayres, 1859 -- valid -- tiger rockfish
  Sebastes norvegicus (Ascanius, 1772) -- valid -- golden redfish, sébaste orangé
  Sebastes notius Chen, 1971 -- valid -- Guadalupe rockfish, rocote de Guadalupe
  Sebastes ovalis (Ayres, 1862) -- valid -- rocote manchado, speckled rockfish
  Sebastes paucispinis Ayres, 1854 -- valid -- bocaccio, rocote bocaccio
  Sebastes peduncularis Chen, 1975 -- valid -- Gulf rockfish, rocote del Golfo
  Sebastes phillipsi (Fitch, 1964) -- valid -- chameleon rockfish
  Sebastes pinniger (Gill, 1864) -- valid -- canary rockfish, rocote canario
  Sebastes polyspinis (Taranetz and Moiseev in Taranetz, 1933) -- valid -- northern rockfish
  Sebastes proriger (Jordan and Gilbert, 1880) -- valid -- redstripe rockfish
  Sebastes rastrelliger (Jordan and Gilbert, 1880) -- valid -- grass rockfish, rocote olivo
  Sebastes reedi (Westrheim and Tsuyuki, 1967) -- valid -- yellowmouth rockfish
  Sebastes rosaceus Girard, 1854 -- valid -- rocote rosado, rosy rockfish
  Sebastes rosenblatti Chen, 1971 -- valid -- greenblotched rockfish, rocote motas verdes
  Sebastes ruberrimus (Cramer, 1895) -- valid -- rasphead rockfish, rocote ojo amarillo, yelloweye rockfish
  Sebastes rubrivinctus (Jordan and Gilbert, 1880) -- valid -- flag rockfish, rocote bandera
  Sebastes rufinanus Lea and Fitch, 1972 -- valid -- dwarf-red rockfish
  Sebastes rufus (Eigenmann and Eigenmann, 1890) -- valid -- bank rockfish, rocote rojo
  Sebastes saxicola (Gilbert, 1890) -- valid -- rocote cola listada, stripetail rockfish
  Sebastes semicinctus (Gilbert, 1897) -- valid -- halfbanded rockfish, rocote inspector
  Sebastes serranoides (Eigenmann and Eigenmann, 1890) -- valid -- olive rockfish, rocote falsa cabrilla
  Sebastes serriceps (Jordan and Gilbert, 1880) -- valid -- rocote presidiario, treefish
  Sebastes simulator Chen, 1971 -- valid -- pinkrose rockfish, rocote rosa
  Sebastes sinensis (Gilbert, 1890) -- valid -- blackmouth rockfish, rocote boquinegra
  Sebastes spinorbis Chen, 1975 -- valid -- rocote ojo espinoso, spinyeye rockfish
  Sebastes umbrosus (Jordan and Gilbert, 1882) -- valid -- honeycomb rockfish, rocote panal
  Sebastes variegatus Quast, 1971 -- valid -- harlequin rockfish
  Sebastes varispinis Chen, 1975 -- valid -- hidden rockfish, rocote escondido
  Sebastes wilsoni (Gilbert, 1915) -- valid -- pygmy rockfish
  Sebastes zacentrus (Gilbert, 1890) -- valid -- sharpchin rockfish
  Sebastolobus alascanus Bean, 1890 -- valid -- chancharro alacrán, shortspine thornyhead
  Sebastolobus altivelis Gilbert, 1896 -- valid -- chancharro espinoso, longspine thornyhead
  Sebastolobus macrochir (Günther, 1877) -- valid -- broadbanded thornyhead, broadfin thornyhead
  Sectator ocyurus (Jordan and Gilbert, 1882) -- valid -- bluestriped chub, chopa salema
  Selar crumenophthalmus (Bloch, 1793) -- valid -- bigeye scad, charrito ojón, chicharro
  Selene brevoortii (Gill, 1863) -- valid -- jorobado mexicano, Mexican lookdown
  Selene brownii (Cuvier, 1816) -- valid -- Caribbean moonfish, jorobado luna
  Selene orstedii Lütken, 1880 -- valid -- dollarfish, jorobado carite, Mexican moonfish, moonfish
  Selene peruviana (Guichenot, 1866) -- valid -- jorobado papelillo, Pacific moonfish
  Selene setapinnis (Mitchill, 1815) -- valid -- Atlantic moonfish, cara de caballo, jorobado caballa
  Selene vomer (Linnaeus, 1758) -- valid -- jorobado, jorobado penacho, lookdown
  Semicossyphus pulcher (Ayres, 1854) -- valid -- California sheephead, vieja californiana
  Semotilus atromaculatus (Mitchill, 1818) -- valid -- creek chub, mulet à cornes
  Semotilus corporalis (Mitchill, 1817) -- valid -- fallfish, ouitouche
  Semotilus lumbee Snelson and Suttkus, 1978 -- valid -- sandhills chub
  Semotilus thoreauianus Jordan, 1877 -- valid -- Dixie chub
  Seriola dumerili (Risso, 1810) -- valid -- coronado de ley, greater amberjack, medregal coronado
  Seriola fasciata (Bloch, 1793) -- valid -- lesser amberjack, medregal, medregal listado
  Seriola lalandi Valenciennes in Cuvier and Valenciennes, 1833 -- valid -- great amberjack, medregal rabo amarillo, yellowtail, yellowtail jack
  Seriola peruana Steindachner, 1881 -- valid -- fortune jack, medregal fortuno
  Seriola rivoliana Valenciennes in Cuvier and Valenciennes, 1833 -- valid -- almaco jack, coronado, medregal limón, Pacific amberjack
  Seriola zonata (Mitchill, 1815) -- valid -- banded rubberfish, banded rudderfish, coronado de bandas, medregal rayado, sériole à ceintures
  Seriphus politus Ayres, 1860 -- valid -- corvineta reina, queenfish
  Serraniculus pumilio Ginsburg, 1952 -- valid -- pygmy sea bass, serrano pigmeo
  Serranidae -- valid -- bars, cabrillas y meros, groupers, mérous, sea basses, sea basses and groupers, serranidés, serrans
  Serranus aequidens Gilbert, 1890 -- valid -- deepwater serrano, serrano de agua profunda
  Serranus annularis (Günther, 1880) -- valid -- orangeback bass, serrano de dorso naranja, serrano naranja
  Serranus atrobranchus (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- blackear bass, serrano oreja negra
  Serranus baldwini (Evermann and Marsh, 1899) -- valid -- lantern bass, serrano linterna
  Serranus chionaraia Robins and Starck, 1961 -- valid -- serrano nevado, snow bass
  Serranus huascarii Steindachner, 1900 -- valid -- flag serrano, serrano bandera
  Serranus notospilus Longley, 1935 -- valid -- saddle bass, serrano ensillado
  Serranus phoebe Poey, 1851 -- valid -- diana, serrano diana, tattler
  Serranus psittacinus Valenciennes, 1846 -- valid -- barred serrano, serrano guaseta
  Serranus socorroensis Allen and Robertson, 1992 -- valid -- serrano de Socorro, Socorro serrano
  Serranus subligarius (Cope, 1870) -- valid -- belted sandfish, serrano aporreado, serrano leopardo
  Serranus tabacarius (Cuvier in Cuvier and Valenciennes, 1829) -- valid -- jácome, serrano jácome, tobaccofish
  Serranus tigrinus (Bloch, 1790) -- valid -- harlequin bass, serrano arlequín
  Serranus tortugarum Longley, 1935 -- valid -- chalk bass, serrano pálido, serrano tortuga
  Sicydium gymnogaster Ogilvie-Grant, 1884 -- valid -- dormilón de Veracruz, smoothbelly goby
  Sicydium multipunctatum Regan, 1906 -- valid -- dormilón pecoso, multispotted goby
  Sigmistes caulias Rutter in Jordan and Evermann, 1898 -- valid -- kelp sculpin
  Sigmistes smithi Schultz, 1938 -- valid -- arched sculpin
  Siluriformes -- valid -- catfishes, silures
  Skiffia francesae Kingston, 1978 -- valid -- golden skiffia, tiro dorado
  Skiffia lermae Meek, 1902 -- valid -- olive skiffia, tiro olivo
  Skiffia multipunctata (Pellegrin, 1901) -- valid -- splotched skiffia, tiro pintado
  Snyderichthys copei (Jordan and Gilbert, 1881) -- invalid -- leatherside chub
  Soleidae -- valid -- soles, soles, suelas soles
  Somniosus microcephalus (Bloch and Schneider, 1801) -- valid -- gray shark, Greenland shark, ground shark, gurry shark, laimargue, sleeper shark
  Somniosus pacificus Bigelow and Schroeder, 1944 -- valid -- Pacific sleeper shark, tiburón dormilón del Pacífico
  Sparidae -- valid -- dorades, plumas, porgies
  Sparisoma atomarium (Poey, 1861) -- valid -- greenblotch parrotfish, loro de lunar verde, loro mancha verde
  Sparisoma aurofrenatum (Valenciennes in Cuvier and Valenciennes, 1840) -- valid -- loro manchado, redband parrotfish, vieja lora
  Sparisoma chrysopterum (Bloch and Schneider, 1801) -- valid -- loro colirrojo, loro verde, redtail parrotfish
  Sparisoma radians (Valenciennes in Cuvier and Valenciennes, 1840) -- valid -- bucktooth parrotfish, loro dientuso
  Sparisoma rubripinne (Valenciennes in Cuvier and Valenciennes, 1840) -- valid -- loro aletirojo, loro coliamarilla, redfin parrotfish, yellowtail parrotfish
  Sparisoma viride (Bonnaterre, 1788) -- valid -- loro, loro brilloso, stoplight parrotfish
  Speoplatyrhinus poulsoni Cooper and Kuehne, 1974 -- valid -- Alabama cavefish
  Sphoeroides annulatus (Jenyns, 1842) -- valid -- botete diana, bullseye puffer
  Sphoeroides dorsalis Longley, 1934 -- valid -- botete jaspeado, marbled puffer
  Sphoeroides lispus Walker in Walker and Bussing, 1996 -- valid -- botete liso, naked puffer
  Sphoeroides lobatus (Steindachner, 1870) -- valid -- botete, botete verrugoso, longnose puffer
  Sphoeroides maculatus (Bloch and Schneider, 1801) -- valid -- northern puffer
  Sphoeroides nephelus (Goode and Bean, 1882) -- valid -- botete fruta, southern puffer, tamboril sureño
  Sphoeroides pachygaster (Müller and Troschel in Schomburgk, 1848) -- valid -- blunthead puffer, botete chato
  Sphoeroides parvus Shipp and Yerger, 1969 -- valid -- botete xpú, least puffer
  Sphoeroides sechurae Hildebrand, 1946 -- valid -- botete peruano, Peruvian puffer
  Sphoeroides spengleri (Bloch, 1785) -- valid -- bandtail puffer, botete collarete, tamboril manchado
  Sphoeroides testudineus (Linnaeus, 1758) -- valid -- botete sapo, checkered puffer, tamboríl rayado
  Sphoeroides trichocephalus (Cope, 1870) -- valid -- botete enano, pygmy puffer
  Sphyraena argentea Girard, 1854 -- valid -- barracuda plateada, Pacific barracuda
  Sphyraena barracuda (Edwards in Catesby, 1771) -- valid -- barracuda, great barracuda, picúa
  Sphyraena borealis DeKay, 1842 -- valid -- northern sennet, picudilla
  Sphyraena ensis Jordan and Gilbert, 1882 -- valid -- barracuda mexicana, Mexican barracuda, vicuda
  Sphyraena guachancho Cuvier in Cuvier and Valenciennes, 1829 -- valid -- guaguanche, guaguancho, tolete
  Sphyraena idiastes Heller and Snodgrass, 1903 -- valid -- barracuda pelícano, pelican barracuda
  Sphyraena lucasana Gill, 1863 -- valid -- barracuda de Cortés, Cortez barracuda
  Sphyraena picudilla Poey, 1860 -- invalid -- picudilla, southern sennet
  Sphyraenidae -- valid -- barracudas, barracudas, barracudas
  Sphyrna corona Springer, 1940 -- valid -- cornuda coronada, scalloped bonnethead, scolloped bonnethead
  Sphyrna lewini (Griffith and Smith, 1834) -- valid -- cornuda, cornuda común, scalloped hammerhead
  Sphyrna media Springer, 1940 -- valid -- cornuda cuchara, scoophead
  Sphyrna mokarran (Rüppell, 1837) -- valid -- cornuda de ley, cornuda gigante, great hammerhead
  Sphyrna tiburo (Linnaeus, 1758) -- valid -- bonnethead, cornuda cabeza de pala, cornuda de corona, shovelhead
  Sphyrna zygaena (Linnaeus, 1758) -- valid -- cabeza de martillo, cornuda prieta, smooth hammerhead
  Sphyrnidae Gill, 1872 -- valid -- bonnethead sharks, hammerhead sharks, requins-marteaux, scoophead sharks, tiburones martillo
  Spirinchus starksi (Fisk, 1913) -- valid -- night smelt
  Spirinchus thaleichthys (Ayres, 1860) -- valid -- longfin smelt
  Squalidae Blainville, 1816 -- valid -- cazones aguijones, chiens de mer, dogfish sharks, spiny dogfishes
  Squalus acanthias Linnaeus, 1758 -- valid -- aiguillat commun, cazón espinoso común, dogfish, galludo espinoso, grayfish, piked dogfish, spiny dogfish, spurdog
  Squalus cubensis Howell Rivero, 1936 -- valid -- cazón aguijón cubano, Cuban dogfish, galludo cubano
  Squalus mitsukurii Jordan and Snyder in Jordan and Fowler, 1903 -- valid -- cazón aguijón galludo, shortspine dogfish, shortspine spurdog
  Squatina californica Ayres, 1859 -- valid -- angelote del Pacífico, Pacific angel shark
  Squatina dumeril Lesueur, 1818 -- valid -- angelote del Atlántico, Atlantic angel shark, Atlantic angelshark, sand devil
  Squatinidae Bonaparte, 1838 -- valid -- angel sharks, angelotes, angelsharks, anges de mer, sand devils
  Starksia atlantica Longley, 1934 -- valid -- sapito pelón, smootheye blenny, smootheye blenny, trambollito ojiliso
  Starksia cremnobates (Gilbert, 1890) -- valid -- fugitive blenny, trambollito fugaz
  Starksia fasciata (Longley, 1934) -- valid -- blackbar blenny, blackbar blenny, sapito bandeado, trambollito barra oscura
  Starksia grammilaga Rosenblatt and Taylor, 1971 -- valid -- pinstriped blenny, trambollito estilográfo
  Starksia hoesei Rosenblatt and Taylor, 1971 -- valid -- hose blenny, trambollito manguera
  Starksia lepicoelia Böhlke and Springer, 1961 -- valid -- blackcheek blenny, blackcheek blenny, sapito carinegro, trambollito carinegro
  Starksia lepidogaster Rosenblatt and Taylor, 1971 -- valid -- scalybelly blenny, trambollito panza escamosa
  Starksia nanodes Böhlke and Springer, 1961 -- valid -- dwarf blenny, dwarf blenny, trambollito enano
  Starksia occidentalis Greenfield, 1979 -- valid -- occidental blenny, trambollito occidental
  Starksia ocellata (Steindachner, 1876) -- valid -- checkered blenny, sapito tablero
  Starksia posthon Rosenblatt and Taylor, 1971 -- valid -- brownspotted blenny, trambollito moteado
  Starksia sluiteri (Metzelaar, 1919) -- valid -- spotted blenny, trambollito manchado
  Starksia spinipenis (Al-Uthman, 1960) -- valid -- phallic blenny, trambollito macho
  Starksia starcki Gilbert, 1971 -- valid -- key blenny
  Stathmonotus gymnodermis Springer, 1955 -- valid -- naked blenny, naked blenny, sapito esperanza, tubícola esperanza
  Stathmonotus hemphilli Bean, 1885 -- invalid -- blackbelly blenny, sapito morenita
  Stathmonotus lugubris Böhlke, 1953 -- valid -- Mexican worm blenny, tubícola lombríz
  Stathmonotus sinuscalifornici (Chabanaud, 1942) -- valid -- Gulf worm blenny, tubícola gusano
  Stathmonotus stahli (Evermann and Marsh, 1899) -- valid -- eelgrass blenny, sapito anguila, tubícola anguila
  Stegastes acapulcoensis (Fowler, 1944) -- valid -- Acapulco damselfish, jaqueta acapulqueña
  Stegastes adustus (Troschel in Müller, 1865) -- valid -- chopita prieta, dusky damselfish, jaqueta prieta
  Stegastes diencaeus (Jordan and Rutter, 1897) -- valid -- chopita miel, jaqueta miel, longfin damselfish
  Stegastes flavilatus (Gill, 1862) -- valid -- beaubrummel, jaqueta de dos colores
  Stegastes leucorus (Gilbert, 1892) -- valid -- jaqueta rabo blanco, whitetail damselfish
  Stegastes leucostictus (Müller and Troschel in Schomburgk, 1848) -- valid -- beaugregory, chopita de cola amarilla, jaqueta bonita
  Stegastes partitus (Poey, 1868) -- valid -- bicolor damselfish, chopita bicolor, jaqueta bicolor
  Stegastes planifrons (Cuvier in Cuvier and Valenciennes, 1830) -- valid -- chopita amarilla, jaqueta de tres puntos, threespot damselfish
  Stegastes rectifraenum (Gill, 1862) -- valid -- brown damselfish, Cortez damselfish, jaqueta de Cortés
  Stegastes redemptus (Heller and Snodgrass, 1903) -- valid -- Clarion damselfish, jaqueta azafranada
  Stegastes variabilis (Castelnau, 1855) -- valid -- chopita cacao, cocoa damselfish, jaqueta castaña
  Steindachneria argentea Goode and Bean, 1896 -- valid -- granadero luminoso, luminous hake, mollera luminosa
  Steindachneriidae -- invalid -- luminous hakes, molleras, steindachnériidés
  Stelgistrum beringianum Gilbert and Burke, 1912 -- valid -- smallplate sculpin
  Stelgistrum concinnum Andriashev, 1935 -- valid -- largeplate sculpin
  Stellerina xyosterna (Jordan and Gilbert, 1880) -- valid -- bandido pechoespinoso, pricklebreast poacher
  Stellifer chrysoleuca (Günther, 1867) -- valid -- corvinilla chata, shortnose stardrum
  Stellifer ericymba (Jordan and Gilbert, 1882) -- valid -- corvinilla hueca, hollow stardrum
  Stellifer illecebrosus Gilbert in Jordan and Evermann, 1898 -- valid -- corvinilla plateada, mojararilla, mojararilla, silver stardrum
  Stellifer lanceolatus (Holbrook, 1855) -- valid -- corvinilla lanza, star drum
  Stellifer walkeri Chao, 2001 -- valid -- corvinilla del profesor, professor stardrum
  Stellifer wintersteenorum Chao, 2001 -- valid -- amigo stardrum, corvinilla amigable
  Stenobrachius leucopsarus (Eigenmann and Eigenmann, 1890) -- valid -- linternilla norteña, northern lampfish
  Stenodus leucichthys (Güldenstädt, 1772) -- valid -- inconnu
  Stenotomus caprinus Jordan and Gilbert, 1882 -- valid -- longspine porgy, sargo espinudo
  Stenotomus chrysops (Linnaeus, 1766) -- valid -- porgy, scup
  Stephanolepis hispidus (Linnaeus, 1766) -- invalid -- lija áspera, planehead filefish
  Stephanolepis setifer (Bennett, 1831) -- valid -- lija ciliada, lija de hebra, pygmy filefish
  Stereolepis gigas Ayres, 1859 -- valid -- giant sea bass, pescara
  Sternoptychidae -- valid -- deepsea hatchetfishes, haches d'argent, hatchetfishes, marine hatchetfishes, peces hacha
  Stichaeidae Gill, 1864 -- valid -- peces abrojo, pricklebacks, shannies, stichées
  Stichaeus punctatus (Fabricius, 1780) -- valid -- Arctic shanny, stichée arctique
  Stomias boa (Risso, 1810) -- valid -- boa dragonfish
  Stomiidae -- valid -- barbeled dragonfishes, dragonfishes, dragons à écailles, peces demonios, scaly dragonfishes
  Stromateidae -- valid -- butterfishes, harvestfishes, palometas, rudderfishes, stromatées
  Strongylura exilis (Girard, 1854) -- valid -- agujón californiano, California needlefish, sierrita
  Strongylura hubbsi Collette, 1974 -- valid -- agujón maya, Maya needlefish
  Strongylura marina (Walbaum, 1792) -- valid -- agujón verde, Atlantic needlefish, silver gar
  Strongylura notata (Poey, 1860) -- valid -- agujón de aletas rojas, agujón negro, redfin needlefish
  Strongylura timucu (Walbaum, 1792) -- valid -- agujón timucú, longjaw, timucu, timucú
  Stygnobrotula latebricola Böhlke, 1957 -- valid -- black brotula, brótula oscura
  Stylephoridae -- valid -- ojilargos, stylephoridés, thread-tail, tube-eye, tube-eyes
  Stylephorus chordatus Shaw, 1791 -- valid -- sticklebacks, tube-eye, tubeye
  Stypodon signifer Garman, 1881 -- valid -- carpa de Parras, stumptooth minnow
  Sufflamen verres (Gilbert and Starks, 1904) -- valid -- brown triggerfish, brown triggerfish, cochito naranja, orangeside triggerfish
  Syacium gunteri Ginsburg, 1933 -- valid -- lenguado arenoso, Shoal Flounder, shoal flounder
  Syacium latifrons (Jordan & Gilbert, 1882) -- valid -- beach flounder, Beach Flounder, lenguado playero
  Syacium longidorsale Murakami & Amaoka, 1992 -- valid -- lenguado copetón, pompadour flounder, Pompadour Flounder
  Syacium micrurum Ranzani, 1842 -- valid -- channel flounder, Channel Flounder, fausse limande pâté, lenguado anillado
  Syacium ovale (Günther, 1864) -- valid -- lenguado ovalado, oval flounder, Oval Flounder
  Syacium papillosum (Linnaeus, 1758) -- valid -- dusky flounder, Dusky Flounder, lenguado moreno
  Symphurus arawak Robins & Randall, 1965 -- valid -- Caribbean tonguefish, Caribbean Tonguefish, lengua caribeña
  Symphurus atramentatus Jordan & Bollman, 1890 -- valid -- halfspotted tonguefish, Halfspotted Tonguefish, lengua mediomanchada
  Symphurus atricaudus (Jordan & Gilbert, 1880) -- valid -- California tonguefish, California Tonguefish, lengua californiana, sole californien
  Symphurus billykrietei Munroe, 1998 -- valid -- chocolatebanded tonguefish, Chocolatebanded Tonguefish, Kriete's tonguefish, lengua boba, sole de Kriete
  Symphurus callopterus Munroe & Mahadeva, 1989 -- valid -- chocolate tonguefish, Chocolate Tonguefish, lengua chocolate
  Symphurus chabanaudi Mahadeva & Munroe, 1990 -- valid -- darkcheek tonguefish, Darkcheek Tonguefish, lengua cachete prieto
  Symphurus civitatium Ginsburg, 1951 -- valid -- lengua gatita, offshore tonguefish, Offshore Tonguefish
  Symphurus diomedeanus (Goode & Bean, 1885) -- valid -- lengua de vaca, lengua filonegro, sole tachetée, Spottedfin Tonguefish, spottedfin tonguefish
  Symphurus elongatus (Günther, 1868) -- valid -- elongate tonguefish, Elongate Tonguefish, lengua esbelta
  Symphurus fasciolaris Gilbert, 1892 -- valid -- banded tonguefish, Banded Tonguefish, lengua listada
  Symphurus gorgonae Chabanaud, 1948 -- valid -- dwarf tonguefish, Dwarf Tonguefish, lengua enana
  Symphurus leei Jordan & Bollman, 1890 -- valid -- blacktail tonguefish, Blacktail Tonguefish, lengua colinegra
  Symphurus marginatus (Goode & Bean, 1886) -- valid -- marginated tonguefish, margined tonguefish, Margined Tonguefish, slender tonguefish
  Symphurus melanurus Clark, 1936 -- valid -- drab tonguefish, Drab Tonguefish, lengua lucia
  Symphurus melasmatotheca Munroe & Nizinski, 1990 -- valid -- darkbelly tonguefish, Darkbelly Tonguefish, lengua tripa negra
  Symphurus minor Ginsburg, 1951 -- valid -- largescale tonguefish, Largescale Tonguefish
  Symphurus oligomerus Mahadeva & Munroe, 1990 -- valid -- lengua coliblanca, whitetail tonguefish, Whitetail Tonguefish
  Symphurus parvus Ginsburg, 1951 -- valid -- lengua pigmea, Pygmy Tonguefish, pygmy tonguefish
  Symphurus pelicanus Ginsburg, 1951 -- valid -- lengua colilarga, Longtail Tonguefish, longtail tonguefish
  Symphurus piger (Goode & Bean, 1886) -- valid -- deepwater tonguefish, Deepwater Tonguefish, lengua de vaca perezosa, lengua perezosa
  Symphurus plagiusa (Linnaeus, 1766) -- valid -- blackcheek tonguefish, Blackcheek Tonguefish, lengua de vaca gris, lengua gris
  Symphurus prolatinaris Munroe, Nizinski & Mahadeva, 1991 -- valid -- halfstriped tonguefish, Halfstriped Tonguefish, lengua narigona
  Symphurus pusillus (Goode & Bean, 1885) -- valid -- northern tonguefish, Northern Tonguefish
  Symphurus stigmosus Munroe, 1998 -- valid -- blotchfin tonguefish, Blotchfin Tonguefish
  Symphurus undecimplerus Munroe & Nizinski, 1990 -- valid -- imitator tonguefish, Imitator Tonguefish, lengua imitador
  Symphurus urospilus Ginsburg, 1951 -- valid -- lengua colipunteada, lengua de vaca colipunteada, spottail tonguefish, Spottail Tonguefish
  Symphurus williamsi Jordan & Culver in Jordan, 1895 -- valid -- lengua amarillenta, yellow tonguefish, Yellow Tonguefish
  Symphysanodon berryi Anderson, 1970 -- valid -- slope bass
  Symphysanodontidae Lee, 1989 -- valid -- pargos del talud, slopefishes, symphysanodontidés
  Synagrops bellus (Goode and Bean, 1896) -- valid -- blackmouth bass, blackmouth cardinalfish
  Synagrops spinosus Schultz, 1940 -- valid -- farolito cachetiquillada, keelcheek bass
  Synagrops trispinosus Mochizuki and Sano, 1984 -- valid -- farolito tres espinas, threespine bass
  Synaphobranchidae -- valid -- anguilas branquias bajas, anguilles égorgées, cutthroat eels, deepsea eels
  Synaphobranchus kaupii Johnson, 1862 -- valid -- longnosed eel, northern cutthroat eel
  Synbranchidae -- valid -- anguillas de lodo, anguilles des mares, swamp eels
  Synbranchus marmoratus Bloch, 1795 -- valid -- anguila de lodo, maporro, marbled swamp eel, marmorated swamp eel, mottled swamp eel
  Synchiropus atrilabiatus (Garman, 1899) -- valid -- blacklip dragonet, dragoncillo de asta
  Synchirus gilli Bean, 1890 -- valid -- manacled sculpin
  Syngnathidae -- valid -- hippocampes, peces pipa y caballitos de mar, pipefishes, seahorses
  Syngnathus affinis Günther, 1870 -- valid -- pez pipa texano, Texas pipefish
  Syngnathus auliscus (Swain, 1882) -- valid -- barred pipefish, pez pipa anillado
  Syngnathus californiensis Storer, 1845 -- valid -- great pipefish, kelp pipefish, pez pipa californiano
  Syngnathus caribbaeus Dawson, 1979 -- valid -- Caribbean pipefish, pez pipa caribeño
  Syngnathus carinatus (Gilbert, 1892) -- valid -- Cortez pipefish, pez pipa de Cortés
  Syngnathus euchrous Fritzsche, 1980 -- valid -- chocolate pipefish, pez pipa chocolate
  Syngnathus exilis (Osburn and Nichols, 1916) -- valid -- barcheek pipefish, pez pipa cachete rayado
  Syngnathus floridae (Jordan and Gilbert, 1882) -- valid -- dusky pipefish, pez pipa prieto
  Syngnathus fuscus Storer, 1839 -- valid -- northern pipefish, syngnathe brun
  Syngnathus insulae Fritzsche, 1980 -- valid -- Guadalupe pipefish, pez pipa de Guadalupe
  Syngnathus leptorhynchus Girard, 1854 -- valid -- bay pipefish, pez pipa de bahía, slendernosed pipefish
  Syngnathus louisianae Günther, 1870 -- valid -- chain pipefish, pez pipa cadena
  Syngnathus makaxi Herald and Dawson, 1972 -- valid -- pez pipa yucateco, Yucatan pipefish
  Syngnathus pelagicus Linnaeus, 1758 -- valid -- pez pipa oceánico, sargassum pipefish, trompetero oceánico
  Syngnathus scovelli (Evermann and Kendall, 1896) -- valid -- Gulf pipefish, pez pipa del Golfo
  Syngnathus springeri Herald, 1942 -- valid -- bull pipefish
  Synodontidae -- valid -- Bombay ducks, chiles, lizardfishes, poissons-lézards, sauries
  Synodus evermanni Jordan and Bollman, 1890 -- valid -- chile cadena, spotted lizardfish
  Synodus foetens (Linnaeus, 1766) -- valid -- chile apestoso, inshore lizardfish, lagarto máximo
  Synodus intermedius (Spix and Agassiz, 1829) -- valid -- chile manchado, lagarto manchado, sand diver
  Synodus lacertinus Gilbert, 1890 -- valid -- calico lizardfish, chile lagarto
  Synodus lucioceps (Ayres, 1855) -- valid -- California lizardfish, chile lucio
  Synodus poeyi Jordan, 1887 -- valid -- chile barbado, lagarto barbado, offshore lizardfish
  Synodus saurus (Linnaeus, 1758) -- valid -- bluestripe lizardfish
  Synodus scituliceps Jordan and Gilbert, 1882 -- valid -- chile arpón, lance lizardfish
  Synodus sechurae Hildebrand, 1946 -- valid -- chile iguana, iguana lizardfish
  Synodus synodus (Linnaeus, 1758) -- valid -- chile rojo, lagarto rojizo, red lizardfish
  Tactostoma macropus Bolin, 1939 -- valid -- longfin dragonfish
  Taractes asper Lowe, 1843 -- valid -- rough pomfret
  Taractes rubescens (Jordan and Evermann, 1887) -- valid -- keeltail pomfret, tristón coliquillada
  Taractichthys longipinnis (Lowe, 1843) -- valid -- bigscale pomfret, brama aletuda, tristón aletudo
  Taractichthys steindachneri (Döderlein in Steindachner and Döderlein, 1883) -- valid -- sickle pomfret, tristón segador
  Tarletonbeania crenularis (Jordan and Gilbert, 1880) -- valid -- blue lanternfish, linternilla azul
  Tautoga onitis (Linnaeus, 1758) -- valid -- tautog
  Tautogolabrus adspersus (Walbaum, 1792) -- valid -- cunner, tanche-tautogue
  Tetragonuridae -- valid -- colicuadrados, squaretails, tétragonures
  Tetragonurus atlanticus Lowe, 1839 -- valid -- bigeye squaretail
  Tetragonurus cuvieri Risso, 1810 -- valid -- colicuadrado ojito, smalleye squaretail
  Tetraodontidae -- valid -- blowfishes, botetes, globefishes, puffers, rabbitfishes, sphéroïdes, swellfishes, toadfishes
  Tetrapturus albidus Poey, 1860 -- invalid -- aguja blanca, Atlantic white marlin, marlin blanco, skilligalee, white marlin
  Tetrapturus angustirostris Tanaka, 1915 -- valid -- Japanese spearfish, marlin trompa corta, shortbill spearfish, shortnose spearfish, slender spearfish
  Tetrapturus audax (Philippi, 1887) -- invalid -- barred marlin, marlin rayado, Pacific striped marlin, spikefish, striped marlin, striped swordfish
  Tetrapturus pfluegeri Robins and de Sylva, 1963 -- valid -- aguja del Pacífico, longbill spearfish, marlin trompa larga
  Thalassoma bifasciatum (Bloch, 1791) -- valid -- bluehead, cara de cotorra
  Thalassoma grammaticum Gilbert, 1890 -- valid -- señorita crepúsculo, sunset wrasse
  Thalassoma lucasanum (Gill, 1862) -- valid -- arcoiris de Cortés, bluehead wrasse, Cortez rainbow wrasse
  Thalassoma virens Gilbert, 1890 -- valid -- emerald wrasse, señorita esmeralda
  Thaleichthys pacificus (Richardson, 1836) -- valid -- eulachon
  Theragra chalcogramma (Pallas, 1814) -- invalid -- Alaska pollock, walleye pollock
  Thoburnia atripinnis (Bailey, 1959) -- valid -- blackfin sucker
  Thoburnia hamiltoni Raney and Lachner, 1946 -- valid -- rustyside sucker
  Thoburnia rhothoeca (Thoburn in Jordan and Evermann, 1896) -- valid -- torrent sucker
  Thunnus alalunga (Bonnaterre, 1788) -- valid -- albacora, albacore, atún blanco, germon, longfinned albacore
  Thunnus albacares (Bonnaterre, 1788) -- valid -- albacore, atún aleta amarilla, atún de aleta amarilla, rabil, yellowfin tuna
  Thunnus atlanticus (Lesson, 1831) -- valid -- atún aleta negra, blackfin tuna, falsa albacora, thon à nageoires noires
  Thunnus obesus (Lowe, 1839) -- valid -- atún ojo grande, bigeye tuna, patudo, thon obèse
  Thunnus orientalis (Temminck and Schlegel, 1844) -- valid -- atún cimarrón, Pacific bluefin tuna
  Thunnus thynnus (Linnaeus, 1758) -- valid -- Atlantic bluefin tuna, atún, atún aleta azul, bluefin tuna, horse mackerel, northern bluefin tuna, thon rouge
  Thymallus arcticus (Pallas, 1776) -- valid -- Arctic grayling, ombre arctique
  Thyriscus anoplus Gilbert and Burke, 1912 -- valid -- sponge sculpin
  Tilapia mariae Boulenger, 1899 -- valid -- spotted tilapia
  Tilapia zillii (Gervais, 1848) -- valid -- redbelly tilapia, Zilli's tilapia
  Tinca tinca (Linnaeus, 1758) -- valid -- tanche, tench
  Tomicodon absitus Briggs, 1955 -- valid -- chupapiedra lejana, distant clingfish
  Tomicodon boehlkei Briggs, 1955 -- valid -- chupapiedra de Cortés, Cortez clingfish
  Tomicodon eos (Jordan and Gilbert, 1882) -- valid -- chupapiedra rosada, rosy clingfish
  Tomicodon fasciatus (Peters, 1859) -- valid -- barred clingfish, chupapiedra de barras, pequita barreada
  Tomicodon humeralis (Gilbert, 1890) -- valid -- chupapiedra de Sonora, Sonora clingfish
  Tomicodon myersi Briggs, 1955 -- valid -- blackstripe clingfish, chupapiedra raya negra
  Tomicodon petersii (Garman, 1875) -- valid -- chupapiedra clepsidra, hourglass clingfish
  Tomicodon zebra (Jordan and Gilbert, 1882) -- valid -- chupapiedra cebra, zebra clingfish
  Torpedinidae Bonaparte, 1838 -- valid -- electric rays, torpedo electric rays, torpedo rays, torpedoes, torpedos, torpilles
  Torpedo californica Ayres, 1855 -- valid -- Pacific electric ray, torpedo del Pacífico
  Torpedo nobiliana Bonaparte, 1835 -- valid -- Atlantic torpedo, torpedo de lo alto, torpedo del Atlántico
  Totoaba macdonaldi (Gilbert, 1890) -- valid -- totoaba, totoaba, totuava
  Trachichthyidae -- valid -- hoplites, redfishes, relojes, roughies, slime heads
  Trachinocephalus myops (Forster in Bloch and Schneider, 1801) -- valid -- anoli serpent, bluntnose lizardfish, chile chato, lagarto ñato, snakefish
  Trachinotus carolinus (Linnaeus, 1766) -- valid -- Florida pompano, palorneta común, pámpano amarillo
  Trachinotus falcatus (Linnaeus, 1758) -- valid -- pámpano, pámpano palometa, permit
  Trachinotus goodei Jordan and Evermann, 1896 -- valid -- palometa, pámpano listado
  Trachinotus kennedyi Steindachner, 1876 -- valid -- blackblotch pompano, pámpano gitano
  Trachinotus paitensis Cuvier in Cuvier and Valenciennes, 1832 -- valid -- paloma pompano, pámpano paloma
  Trachinotus rhodopus Gill, 1863 -- valid -- gafftopsail pompano, pámpano fino
  Trachinotus stilbe (Jordan and McGregor, 1898) -- valid -- pámpano acerado, steel pompano
  Trachipteridae -- valid -- listoncillos, ribbonfishes, trachiptères
  Trachipterus altivelis Kner, 1859 -- valid -- king-of-the-salmon, Pacific king-of-salmon, rey de los salmones
  Trachipterus arcticus (Brünnich, 1771) -- valid -- dealfish
  Trachipterus fukuzakii Fitch, 1964 -- valid -- listoncillo pabilo, tapertail ribbonfish
  Trachurus lathami Nichols, 1920 -- valid -- charrito garretón, rough scad
  Trachurus symmetricus (Ayres, 1855) -- valid -- charrito chícharo, jack mackerel
  Trachyscorpia cristulata (Goode and Bean, 1896) -- valid -- Atlantic thornyhead
  Triacanthodidae -- valid -- cochis espinosos, spikefishes, triacanthodidés
  Triaenodon obesus (Rüppell, 1837) -- valid -- cazón coralero trompacorta, whitetip reef shark
  Triakidae Gray, 1851 -- valid -- cazones, émissoles, hound sharks, houndsharks, smooth dogfishes, smooth-hounds, topes, whiskery sharks
  Triakis semifasciata Girard, 1855 -- valid -- leopard shark, tiburón leopardo
  Trichiuridae -- valid -- cutlassfishes, hairtails, ribbonfishes, sables, sabres de mer
  Trichiurus lepturus Linnaeus, 1758 -- valid -- Atlantic cutlassfish, Australian hairtail, largehead hairtail, sable, sable del Atlántico
  Trichiurus nitens Garman, 1899 -- valid -- Pacific cutlassfish, sable del Pacífico
  Trichocottus brashnikovi Soldatov and Pavlenko, 1915 -- valid -- hairhead sculpin
  Trichodon trichodon (Tilesius, 1813) -- valid -- Pacific sandfish
  Trichodontidae -- valid -- areneros, sandfishes, trichodontes
  Trichopsetta ventralis (Goode & Bean, 1885) -- valid -- lenguado de punto, Sash Flounder, sash flounder
  Trichopsis vittata (Cuvier in Cuvier and Valenciennes, 1831) -- valid -- croaking gourami
  Tridentiger barbatus (Günther, 1861) -- valid -- Shokihaze goby
  Tridentiger bifasciatus Steindachner, 1881 -- valid -- shimofuri goby
  Tridentiger trigonocephalus (Gill, 1859) -- valid -- chameleon goby
  Triglidae -- valid -- grondins, gurnards, searobins, vacas y rubios
  Triglops forficatus (Gilbert, 1896) -- valid -- scissortail sculpin
  Triglops macellus (Bean, 1884) -- valid -- roughspine sculpin
  Triglops metopias Gilbert and Burke, 1912 -- valid -- highbrow sculpin
  Triglops murrayi Günther, 1888 -- valid -- faux-trigle armé, mailed sculpin, moustache sculpin
  Triglops nybelini Jensen, 1944 -- valid -- bigeye sculpin, faux-trigle à grands yeux, mailed sculpin
  Triglops pingelii Reinhardt, 1837 -- valid -- ribbed sculpin
  Triglops scepticus Gilbert, 1896 -- valid -- spectacled sculpin
  Triglops xenostethus Gilbert, 1896 -- valid -- scalybreasted sculpin
  Trinectes fimbriatus (Günther, 1862) -- valid -- suela pintada, whitespotted sole, Whitespotted Sole
  Trinectes fonsecensis (Günther, 1862) -- valid -- spottedfin sole, Spottedfin Sole, suela rayada
  Trinectes inscriptus (Gosse, 1851) -- valid -- acedía reticulada, Scrawled Sole, scrawled sole, suela garabato
  Trinectes maculatus (Bloch & Schneider, 1801) -- valid -- hogchoker, Hogchoker, suela tortilla
  Trinectes paulistanus (Miranda Ribeiro, 1915) -- valid -- southern hogchoker, Southern Hogchoker, suela carioca
  Triphoturus mexicanus (Gilbert, 1890) -- valid -- linternilla mexicana, Mexican lampfish
  Tripterygiidae -- valid -- threadfin blennies, tres aletas, triplefins, triptérygiidés
  Trogloglanis pattersoni Eigenmann, 1919 -- valid -- toothless blindcat
  Tylosurus acus (Lacepède, 1803) -- valid -- agujon, agujón, agujón del Atlántico, Atlantic agujon, keeljawed longtom
  Tylosurus crocodilus (Péron and Lesueur in Lesueur, 1821) -- valid -- agujón lisero, houndfish
  Tylosurus pacificus (Steindachner, 1876) -- valid -- agujón del Pacífico, Pacific agujon
  Typhliasina pearsei (Hubbs, 1938) -- valid -- dama blanca ciega, Mexican blind brotula
  Typhlichthys subterraneus Girard, 1859 -- valid -- southern cavefish
  Typhlogobius californiensis Steindachner, 1879 -- valid -- blind goby, gobio ciego
  Ulaema Jordan and Evermann in Jordan, 1895 -- invalid
  Ulaema lefroyi (Goode, 1874) -- invalid -- longfinned silverbiddy, longfinned silverbiddy, mottled mojarra, mottled mojarra
  Ulcina olrikii (Lütken, 1877) -- valid -- Arctic alligatorfish
  Ulvaria subbifurcata (Storer, 1839) -- valid -- radiated shanny, ulvaire deux-lignes
  Ulvicola sanctaerosae Gilbert and Starks in Gilbert, 1897 -- invalid -- espinoso de marea sargacero, kelp gunnel
  Umbra limi (Kirtland, 1841) -- valid -- central mudminnow, umbre de vase
  Umbra pygmaea (DeKay, 1842) -- valid -- eastern mudminnow
  Umbridae -- valid -- mudminnows, peces del fango, umbres
  Umbrina analis Günther, 1868 -- valid -- berrugata espinuda, longspine croaker
  Umbrina bussingi López S., 1980 -- valid -- berrugata ojona, bigeye croaker
  Umbrina coroides Cuvier in Cuvier and Valenciennes, 1830 -- valid -- berrugata arenera, roncador, sand drum
  Umbrina dorsalis Gill, 1862 -- valid -- berrugata aleta larga, longfin croaker
  Umbrina roncador Jordan and Gilbert, 1882 -- valid -- berrugata aleta amarilla, yellowfin croaker
  Umbrina wintersteeni Walker and Radford, 1992 -- valid -- berrugata de Cortés, Cortez croaker
  Umbrina xanti Gill, 1862 -- valid -- berrugata roncadora, blackmouth croaker, blackmouth croaker, surf croaker
  Upeneus parvus Poey, 1852 -- valid -- chivo rayuelo, dwarf goatfish, salmonete rayado
  Uranoscopidae -- valid -- miracielos, stargazers, uranoscopes
  Uraspis helvola (Forster in Bloch and Schneider, 1801) -- valid -- jurel lengua blanca, whitemouth jack, whitetongued crevalle
  Uraspis secunda (Poey, 1860) -- valid -- cottonmouth jack, jurel volantín, segundo
  Urobatis concentricus Osburn and Nichols, 1916 -- valid -- raya redonda de arrecife, reef stingray
  Urobatis halleri (Cooper, 1863) -- valid -- raya redonda común, round stingray
  Urobatis jamaicensis (Cuvier, 1816) -- valid -- raya redonda de estero, tembladera, yellow stingray
  Urobatis maculatus Garman, 1913 -- valid -- Cortez stingray, raya redonda de Cortés
  Uroconger syringinus Ginsburg, 1954 -- valid -- congrio plumilla, threadtail conger
  Urolophidae Müller and Henle, 1841 -- valid -- pastenagues à queue charnue, rayas redondas, round stingrays, stingarees
  Urophycis chesteri (Goode and Bean, 1878) -- invalid -- longfin hake, merluche à longues nageoires
  Urophycis chuss (Walbaum, 1792) -- valid -- merluche-écureuil, red hake, squirrel hake
  Urophycis cirrata (Goode and Bean, 1896) -- valid -- Gulf hake, merluza barbona del Golfo
  Urophycis earllii (Bean, 1880) -- valid -- Carolina hake
  Urophycis floridana (Bean and Dresel, 1884) -- valid -- merluza barbona floridana, southern codling, southern hake
  Urophycis regia (Walbaum, 1792) -- valid -- merluza barbona reina, spotted codling, spotted hake
  Urophycis tenuis (Mitchill, 1814) -- valid -- merluche blanche, mud hake, white hake
  Uropterygius macrocephalus (Bleeker, 1865) -- valid -- largehead moray, morena cabezona
  Uropterygius macularius (Lesueur, 1825) -- valid -- marbled moray, morena jaspeada
  Uropterygius polystictus Myers and Wade, 1941 -- valid -- morena pintada, peppered moray
  Uropterygius versutus Bussing, 1991 -- valid -- crafty moray, morena lista
  Urotrygon aspidura (Jordan and Gilbert, 1882) -- valid -- Panamic stingray, raya redonda panámica
  Urotrygon chilensis (Günther, 1872) -- valid -- blotched stingray, raya redonda moteada
  Urotrygon munda Gill, 1863 -- valid -- raya redonda áspera, spiny stingray
  Urotrygon nana Miyake and McEachran, 1988 -- valid -- dwarf stingray, raya redonda enana
  Urotrygon rogersi (Jordan and Starks in Jordan, 1895) -- valid -- raya redonda de púas, thorny stingray
  Varicus marilynae Gilmore, 1979 -- valid -- orangebelly goby, orangebelly goby
  Xanthichthys mento (Jordan and Gilbert, 1882) -- valid -- cochito cuadriculado, redtail triggerfish
  Xanthichthys ringens (Linnaeus, 1758) -- valid -- cocuyo, sargassum triggerfish
  Xeneretmus latifrons (Gilbert, 1890) -- valid -- bandido penacho, blacktip poacher
  Xeneretmus leiops Gilbert, 1915 -- valid -- cutfin poacher, smootheye poacher
  Xeneretmus ritteri Gilbert, 1915 -- valid -- bandido bandera, stripefin poacher
  Xeneretmus triacanthus (Gilbert, 1890) -- valid -- bandido manchas azules, bluespotted poacher
  Xenichthys xanti Gill, 1863 -- valid -- bigeye grunt, chula, longfin salema
  Xenistius californiensis (Steindachner, 1876) -- valid -- salema, salema
  Xenodexia ctenolepis Hubbs, 1950 -- valid -- Grijalva studfish, kanmschuppen-karpfling, topo del Grijalva
  Xenolepidichthys dalgleishi Gilchrist, 1922 -- valid -- spotted tinselfish
  Xenomedea rhodopyga Rosenblatt and Taylor, 1971 -- valid -- redrump blenny, trambollito nalga roja
  Xenomugil thoburni (Jordan and Starks in Jordan and Evermann, 1896) -- invalid -- lisa agugú, orange-eye mullet
  Xenomystax congroides Smith and Kanazawa in Smith, 1989 -- valid -- bristletooth conger
  Xenotaenia resolanae Turner, 1946 -- valid -- leopard splitfin, mexcalpique leopardo
  Xenotoca eiseni (Rutter, 1896) -- valid -- mexcalpique cola roja, redtail splitfin
  Xenotoca melanosoma Fitzsimons, 1972 -- valid -- black splitfin, mexcalpique negro
  Xiphias gladius Linnaeus, 1758 -- valid -- broadbill, emperador, espadon, pez espada, swordfish
  Xiphiidae -- valid -- espadas, espadons, swordfishes
  Xiphister atropurpureus (Kittlitz, 1858) -- valid -- abrojo negro, black prickleback
  Xiphister mucosus (Girard, 1858) -- valid -- rock prickleback
  Xiphophorus alvarezi Rosen, 1960 -- valid -- Chiapas swordtail, espada de Comitán
  Xiphophorus andersi Meyer and Schartl, 1980 -- valid -- espada del Atoyac, spiketail platyfish
  Xiphophorus birchmanni Lechner and Radda, 1987 -- valid -- espada del Tempoal, sheepshead swordtail
  Xiphophorus clemenciae Alvarez, 1959 -- valid -- Coatzacoalcos swordtail, espada de Clemencia
  Xiphophorus continens Rauchenberger, Kallman and Morizot, 1990 -- valid -- espada de Quince, short-sword platyfish
  Xiphophorus cortezi Rosen, 1960 -- valid -- delicate swordtail, espada fina
  Xiphophorus couchianus (Girard, 1859) -- valid -- espada de Monterrey, Monterrey platyfish
  Xiphophorus evelynae Rosen, 1960 -- valid -- espada del Necaxa, reticulate platyfish
  Xiphophorus gordoni Miller and Minckley, 1963 -- valid -- Cuatro Cienegas platyfish, espada de Cuatro Ciénegas
  Xiphophorus hellerii Heckel, 1848 -- valid -- cola de espada, green swordtail
  Xiphophorus maculatus (Günther, 1866) -- valid -- espada sureña, platy, southern platyfish
  Xiphophorus malinche Rauchenberger, Kallman and Morizot, 1990 -- valid -- espada de Malinche, highland swordtail
  Xiphophorus meyeri Schartl and Schröder, 1988 -- valid -- espada de Múzquiz, marbled swordtail
  Xiphophorus milleri Rosen, 1960 -- valid -- Catemaco platyfish, espada de Catemaco
  Xiphophorus montezumae Jordan and Snyder, 1899 -- valid -- espada de Moctezuma, mexican swordfish, Mexican swordfish, Moctezuma swordtail, montezuma helleri, Montezuma helleri
  Xiphophorus nezahualcoyotl Rauchenberger, Kallman and Morizot, 1990 -- valid -- espada montañes, mountain swordtail
  Xiphophorus nigrensis Rosen, 1960 -- valid -- espada pigmea El Abra, Panuco swordtail
  Xiphophorus pygmaeus Hubbs and Gordon, 1943 -- valid -- dwarf helleri, dwarf helleri, dwarf swordtail, dwarf swordtail, espada pigmea delgada, pygmy swordtail
  Xiphophorus variatus (Meek, 1904) -- valid -- espada de Valles, variable platyfish, variegated platy
  Xiphophorus xiphidium (Gordon, 1932) -- valid -- espada del Soto La Marina, swordtail platy, swordtail platy, swordtail platyfish
  Xyrauchen texanus (Abbott, 1860) -- valid -- matalote jorobado, razorback sucker
  Xyrichtys martinicensis Valenciennes in Cuvier and Valenciennes, 1840 -- valid -- cuchillo llorón, doncella llorona, rosy razorfish
  Xyrichtys mundiceps Gill, 1862 -- valid -- Cape razorfish, cuchillo desnudo
  Xyrichtys novacula (Linnaeus, 1758) -- valid -- cuchillo perlino, doncella verde, pearly razorfish
  Xyrichtys splendens Castelnau, 1855 -- valid -- cuchillo de lunar, doncella de lunar, green razorfish
  Xystreurys liolepis Jordan & Gilbert, 1880 -- valid -- fantail sole, Fantail Sole, lenguado cola de abanico
  Yuriria alta (Jordan, 1880) -- valid -- carpa blanca, Jalisco chub
  Yuriria chapalae (Jordan and Snyder, 1899) -- valid -- carpa de Chapala, Chapala chub
  Zalembius rosaceus (Jordan and Gilbert, 1880) -- valid -- mojarra rosada, pink seaperch
  Zalieutes elater (Jordan and Gilbert, 1882) -- valid -- murciélago biocelado, roundel batfish, spotted batfish
  Zalieutes mcgintyi (Fowler, 1952) -- valid -- murciélago tres cuernos, tricorn batfish
  Zanclidae -- valid -- cochers, ídolos moros, Moorish idols
  Zanclus cornutus (Linnaeus, 1758) -- valid -- ídolo moro, Moorish idol
  Zaniolepis frenata Eigenmann and Eigenmann, 1889 -- valid -- cepillo espina corta, shortspine combfish
  Zaniolepis latipinnis Girard, 1858 -- valid -- cepillo espina larga, longspine combfish
  Zaprora silenus Jordan, 1896 -- valid -- prowfish
  Zaproridae Jordan and Evermann, 1898 -- valid -- peces proa, prowfishes, zaproridés
  Zapteryx exasperata (Jordan and Gilbert, 1880) -- valid -- banded guitarfish, guitarra rayada
  Zeidae Latreille, 1825 -- valid -- buckler dories, dories, John dories, peces de San Pedro, Saint-Pierre, St. Peter fish
  Zenopsis conchifera (Lowe, 1852) -- valid -- American john dory, buckler dory, San Pedro plateado
  Zenopsis nebulosa (Temminck and Schlegel, 1845) -- valid -- mirror dory
  Zoarces americanus (Bloch and Schneider, 1801) -- valid -- loquette d'Amérique, ocean pout
  Zoarcidae Swainson, 1839 -- valid -- eelpouts, lycodes, viruelas, viviparous blennies
  Zoogoneticus quitzeoensis (Bean, 1898) -- valid -- picote, picote splitfin, picotee goodeid
  Zoogoneticus tequila Webb and Miller, 1998 -- valid -- picote Tequila, Tequila splitfin, Tequila-karpfling
  Zu cristatus (Bonelli, 1819) -- valid -- cinta moñuda, listoncillo festón, scalloped ribbonfish
   

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