Introduced fishes:
| Fishes | Acanthogobius flavimanus | yellowfin goby |
| Fishes | Acanthurus guttatus | whitespotted surgeonfish |
| Fishes | Acanthurus sohal | Red Sea surgeonfish |
| Fishes | Acipenser transmontanus | white sturgeon |
| Fishes | Acipenser or Scaphirhynchus sp. | sturgeon (eastern species) |
| Fishes | Aequidens pulcher | blue acara |
| Fishes | Agamyxis pectinifrons | spotted rafael catfish |
| Fishes | Agosia chrysogaster | longfin dace |
| Fishes | Albula vulpes | bonefish |
| Fishes | Alosa aestivalis | blueback herring |
| Fishes | Alosa chrysochloris | skipjack herring |
| Fishes | Alosa pseudoharengus | alewife |
| Fishes | Alosa sapidissima | American shad |
| Fishes | Ambloplites cavifrons | Roanoke bass |
| Fishes | Ambloplites constellatus | Ozark bass |
| Fishes | Ambloplites rupestris | rock bass |
| Fishes | Ameca splendens | butterfly splitfin |
| Fishes | Ameiurus brunneus | snail bullhead |
| Fishes | Ameiurus catus | white catfish |
| Fishes | Ameiurus melas | black bullhead |
| Fishes | Ameiurus natalis | yellow bullhead |
| Fishes | Ameiurus nebulosus marmoratus | brown bullhead |
| Fishes | Ameiurus nebulosus | brown bullhead |
| Fishes | Ameiurus nebulosus nebulosus | brown bullhead |
| Fishes | Ameiurus platycephalus | flat bullhead |
| Fishes | Amia calva | bowfin |
| Fishes | Ammocrypta bifascia | Florida sand darter |
| Fishes | Ammocrypta clara | western sand darter |
| Fishes | Anabas testudineus | climbing perch |
| Fishes | Anchoa compressa | deepbody anchovy |
| Fishes | Anchoa mundeoloides | northern Gulf anchovy |
| Fishes | Ancistrus cf. temminickii | bristlenosed catfish |
| Fishes | Ancistrus sp. | bristlenosed catfish |
| Fishes | Anguilla anguilla | European eel |
| Fishes | Anguilla australis | shortfin eel |
| Fishes | Anguilla marmorata | marbled eel |
| Fishes | Anguilla rostrata | American eel |
| Fishes | Anguilla sp. | unidentified eel |
| Fishes | Anisotremus davidsonii | sargo |
| Fishes | Apeltes quadracus | fourspine stickleback |
| Fishes | Aphredoderus sayanus | pirate perch |
| Fishes | Aphyocharax anisitsi | bloodfin tetra |
| Fishes | Aplocheilus lineatus | striped panchax |
| Fishes | Aplodinotus grunniens | freshwater drum |
| Fishes | Apolemichthys xanthopunctatus | goldspotted angelfish |
| Fishes | Archoplites interruptus | Sacramento perch |
| Fishes | Arothron diadematus | masked pufferfish |
| Fishes | Astronotus ocellatus | oscar |
| Fishes | Astyanax fasciatus | banded astyanax |
| Fishes | Astyanax mexicanus | Mexican tetra |
| Fishes | Atractosteus spatula | alligator gar |
| Fishes | Bairdiella icistia | bairdiella |
| Fishes | Balantiocheilos melanopterus | tricolor sharkminnow |
| Fishes | Barbonymus (Barbus) schwanenfeldii | tinfoil barb |
| Fishes | Belonesox belizanus | pike killifish |
| Fishes | Betta splendens | Siamese fighting fish |
| Fishes | Brachydanio rerio | zebra danio |
| Fishes | Callichthys callichthys | cascarudo |
| Fishes | Campostoma anomalum | central stoneroller |
| Fishes | Campostoma oligolepis | largescale stoneroller |
| Fishes | Caranx caballus | green jack |
| Fishes | Carassius auratus | goldfish |
| Fishes | Carassius auratus x C. carassius | goldfish x Crucian carp |
| Fishes | Carassius auratus x Cyprinus carpio | goldfish x common carp |
| Fishes | Carassius carassius | crucian carp |
| Fishes | Carpiodes carpio | river carpsucker |
| Fishes | Carpiodes cyprinus | quillback |
| Fishes | Carpiodes velifer | highfin carpsucker |
| Fishes | Catostomus ardens | Utah sucker |
| Fishes | Catostomus catostomus | longnose sucker |
| Fishes | Catostomus commersonii | white sucker |
| Fishes | Catostomus fumeiventris | Owens sucker |
| Fishes | Catostomus latipinnis | flannelmouth sucker |
| Fishes | Catostomus occidentalis | Sacramento sucker |
| Fishes | Catostomus platyrhynchus | mountain sucker |
| Fishes | Catostomus plebeius | Rio Grande sucker |
| Fishes | Catostomus santaanae | Santa Ana sucker |
| Fishes | Catostomus tahoensis | Tahoe sucker |
| Fishes | Catostomus undescribed sp. | Little Colorado River sucker |
| Fishes | Centrarchus macropterus | flier |
| Fishes | Centropyge flavissima | lemonpeel angel |
| Fishes | Centropyge loricula | flaming angelfish |
| Fishes | Cephalopholis argus | peacock hind |
| Fishes | Cephalopholis urodeta | darkfin hind |
| Fishes | Cetengraulis mysticetus | anchoveta |
| Fishes | Chaetodon lunula | raccoon butterflyfish |
| Fishes | Chaetodontoplus mesoleucus | vermiculated angelfish |
| Fishes | Channa argus | northern snakehead |
| Fishes | Channa maculata | blotched snakehead |
| Fishes | Channa marulius | bullseye snakehead |
| Fishes | Channa micropeltes | giant snakehead |
| Fishes | Chanos chanos | milkfish |
| Fishes | Chasmistes brevirostris | shortnose sucker |
| Fishes | Chiloscyllium punctatum | brownbanded bambooshark |
| Fishes | Chirostoma jordani | mesa silverside |
| Fishes | Chitala ornata | clown knife |
| Fishes | Chromileptes altivelis | humpback grouper |
| Fishes | Cichla ocellaris | butterfly peacock bass |
| Fishes | Cichla temensis | speckled pavon |
| Fishes | Cichlasoma beani | Sinaloan cichlid |
| Fishes | Cichlasoma bimaculatum | black acara |
| Fishes | Cichlasoma citrinellum | midas cichlid |
| Fishes | Cichlasoma citrinellum x C. urophthalmus | midas x mayan cichlid hybrid |
| Fishes | Cichlasoma cyanoguttatum | Rio Grande cichlid |
| Fishes | Cichlasoma festae | Guayas cichlid |
| Fishes | Cichlasoma labiatum | red devil |
| Fishes | Cichlasoma meeki | firemouth cichlid |
| Fishes | Cichlasoma nicaraguensis | Moga |
| Fishes | Cichlasoma nigrofasciatum | convict cichlid |
| Fishes | Cichlasoma octofasciatum | Jack Dempsey |
| Fishes | Cichlasoma salvini | yellowbelly cichlid |
| Fishes | Cichlasoma sp. | cichlid |
| Fishes | Cichlasoma spilurum | blue-eyed cichlid |
| Fishes | Cichlasoma synspilum | redhead cichlid |
| Fishes | Cichlasoma trimaculatum | threespot cichlid |
| Fishes | Cichlasoma urophthalmus | Mayan cichlid |
| Fishes | Cirrhitichthys falco | dwarf hawkfish |
| Fishes | Cirrhitichthys oxycephalus | coral hawkfish |
| Fishes | Clarias batrachus | walking catfish |
| Fishes | Clarias fuscus | whitespotted clarias |
| Fishes | Clinostomus elongatus | redside dace |
| Fishes | Clinostomus funduloides funduloides | rosyside dace |
| Fishes | Clinostomus funduloides | rosyside dace |
| Fishes | Colisa fasciata | banded gourami |
| Fishes | Colisa labiosa | thicklipped gourami |
| Fishes | Colisa lalia | dwarf gourami |
| Fishes | Colossoma macropomum | tambaqui |
| Fishes | Colossoma or Piaractus sp. | unidentified pacu |
| Fishes | Colpichthys regis | false grunion |
| Fishes | Coregonus albula | vendace |
| Fishes | Coregonus artedi | cisco |
| Fishes | Coregonus clupeaformis | lake whitefish |
| Fishes | Coregonus lavaretus | powan |
| Fishes | Coregonus maraena | |
| Fishes | Coregonus sp. | a whitefish |
| Fishes | Corydoras aeneus | green corydoras |
| Fishes | Corydoras sp. | corydoras |
| Fishes | Cottus asper | prickly sculpin |
| Fishes | Cottus bairdii | mottled sculpin |
| Fishes | Cottus extensus | Bear Lake sculpin |
| Fishes | Cottus greenei | Shoshone sculpin |
| Fishes | Couesius plumbeus | lake chub |
| Fishes | Crenichthys baileyi grandis | Hiko White River springfish |
| Fishes | Crenichthys nevadae | Railroad Valley springfish |
| Fishes | Ctenopharyngodon idella | grass carp |
| Fishes | Ctenopharyngodon x Hypophthalmichthys idella x nobilis | grass carp x bighead carp |
| Fishes | Ctenopoma nigropannosum | twospot climbing perch |
| Fishes | Culaea inconstans | brook stickleback |
| Fishes | Cynolebias bellottii | Argentine pearlfish |
| Fishes | Cynolebias nigripinnis | blackfin pearlfish |
| Fishes | Cynoscion nebulosus | spotted seatrout |
| Fishes | Cynoscion nebulosus x C. xanthulus | spotted seatrout x orangemouth corvina |
| Fishes | Cynoscion othonopterus | Gulf corvina |
| Fishes | Cynoscion parvipinnis | shortfin corvina |
| Fishes | Cynoscion xanthulus | orangemouth corvina |
| Fishes | Cyprinella analostana | satinfin shiner |
| Fishes | Cyprinella galactura | whitetail shiner |
| Fishes | Cyprinella lutrensis | red shiner |
| Fishes | Cyprinella pyrrhomelas | fieryblack shiner |
| Fishes | Cyprinella spiloptera | spotfin shiner |
| Fishes | Cyprinella venusta cercostigma | eastern blacktail shiner |
| Fishes | Cyprinella venusta | blacktail shiner |
| Fishes | Cyprinella whipplei | steelcolor shiner |
| Fishes | Cyprinodon diabolis | Devils Hole pupfish |
| Fishes | Cyprinodon eremus | Sonoyta pupfish |
| Fishes | Cyprinodon macularius macularius | desert pupfish |
| Fishes | Cyprinodon macularius | desert pupfish |
| Fishes | Cyprinodon nevadensis | Amargosa pupfish |
| Fishes | Cyprinodon nevadensis amargosae | Amargosa pupfish |
| Fishes | Cyprinodon radiosus | Owens pupfish |
| Fishes | Cyprinodon rubrofluviatilis | Red River pupfish |
| Fishes | Cyprinodon salinus | Salt Creek pupfish |
| Fishes | Cyprinodon variegatus | sheepshead minnow |
| Fishes | Cyprinus carpio | common carp |
| Fishes | Dallia pectoralis | Alaska blackfish |
| Fishes | Danio malabaricus | Malabar danio |
| Fishes | Dascyllus aruanus | whitetail damselfish |
| Fishes | Dascyllus trimaculatus | three spot damselfish |
| Fishes | Dorosoma cepedianum | gizzard shad |
| Fishes | Dorosoma petenense | threadfin shad |
| Fishes | Dorosoma petenense atchafalayae | Mississippi threadfin shad |
| Fishes | Empetrichthys latos | Pahrump killifish |
| Fishes | Empetrichthys latos latos | Pahrump killifish |
| Fishes | Engraulis mordax | northern anchovy |
| Fishes | Enneacanthus gloriosus | bluespotted sunfish |
| Fishes | Epinephelus fasciatus | blacktip grouper |
| Fishes | Epinephelus hexagonatus | star-spotted grouper |
| Fishes | Epinephelus irroratus | Marquesan grouper |
| Fishes | Epinephelus merra | dwarf spotted grouper |
| Fishes | Eremichthys acros | desert dace |
| Fishes | Erimyzon sucetta | lake chubsucker |
| Fishes | Esox americanus americanus | redfin pickerel |
| Fishes | Esox americanus vermiculatus | grass pickerel |
| Fishes | Esox lucius | northern pike |
| Fishes | Esox lucius x E. masquinongy | tiger muskellunge |
| Fishes | Esox lucius x E. reicherti | northern pike x amur pike |
| Fishes | Esox masquinongy | muskellunge |
| Fishes | Esox masquinongy ohioensis | muskellunge |
| Fishes | Esox niger | chain pickerel |
| Fishes | Esox reicherti | Amur pike |
| Fishes | Etheostoma blennioides | greenside darter |
| Fishes | Etheostoma caeruleum | rainbow darter |
| Fishes | Etheostoma cragini | Arkansas darter |
| Fishes | Etheostoma edwini | brown darter |
| Fishes | Etheostoma exile | Iowa darter |
| Fishes | Etheostoma fusiforme | swamp darter |
| Fishes | Etheostoma nigrum | johnny darter |
| Fishes | Etheostoma nuchale | watercress darter |
| Fishes | Etheostoma olmstedi | tessellated darter |
| Fishes | Etheostoma simoterum | snubnose darter |
| Fishes | Etheostoma sp. | darter |
| Fishes | Etheostoma zonale | banded darter |
| Fishes | Etropus crossotus | fringed flounder |
| Fishes | Eucinostomus argenteus | spotfin mojarra |
| Fishes | Eucinostomus gracilis | graceful mojarra |
| Fishes | Exoglossum laurae | tonguetied minnow |
| Fishes | Exoglossum maxillingua | cutlip minnow |
| Fishes | Forbesichthys agassizii | spring cavefish |
| Fishes | Fundulus catenatus | northern studfish |
| Fishes | Fundulus chrysotus | golden topminnow |
| Fishes | Fundulus diaphanus diaphanus | eastern banded killifish |
| Fishes | Fundulus diaphanus | banded killifish |
| Fishes | Fundulus grandis | Gulf killifish |
| Fishes | Fundulus heteroclitus | mummichog |
| Fishes | Fundulus kansae | plains killifish |
| Fishes | Fundulus lineolatus | lined topminnow |
| Fishes | Fundulus notatus | blackstripe topminnow |
| Fishes | Fundulus sciadicus | plains topminnow |
| Fishes | Fundulus seminolis | Seminole killifish |
| Fishes | Fundulus stellifer | southern studfish |
| Fishes | Fundulus zebrinus | plains killifish |
| Fishes | Gambusia affinis | western mosquitofish |
| Fishes | Gambusia geiseri | largespring gambusia |
| Fishes | Gambusia holbrooki | eastern mosquitofish |
| Fishes | Gambusia nobilis | Pecos gambusia |
| Fishes | Gasterosteus aculeatus | threespine stickleback |
| Fishes | Gasterosteus aculeatus williamsoni | threespine stickleback |
| Fishes | Geophagus sp. | eartheater |
| Fishes | Gila atraria | Utah chub |
| Fishes | Gila bicolor mohavensis | Mohave tui chub |
| Fishes | Gila bicolor snyderi | Owens tui chub |
| Fishes | Gila bicolor obesa | Lahontan tui chub |
| Fishes | Gila bicolor ssp. | Hot Creek Valley tui chub |
| Fishes | Gila bicolor | tui chub |
| Fishes | Gila coerulea | blue chub |
| Fishes | Gila orcuttii | arroyo chub |
| Fishes | Gila pandora | Rio Grande chub |
| Fishes | Gila seminuda seminuda | Virgin chub |
| Fishes | Gillichthys mirabilis | longjaw mudsucker |
| Fishes | Gillichthys seta | shortjaw mudsucker |
| Fishes | Girella simplicidens | Gulf opaleye |
| Fishes | Glyptoperichthys gibbiceps | leopard pleco |
| Fishes | Gobionellus oceanicus | highfin goby |
| Fishes | Gobiosoma bosc | naked goby |
| Fishes | Gramma loreto | fairy basslet |
| Fishes | Gymnocephalus cernuus | ruffe |
| Fishes | Gymnocorymbus ternetzi | black tetra |
| Fishes | Gymnothorax sp. | unidentified moray |
| Fishes | Gyrinocheilus aymonieri | Chinese algae-eater |
| Fishes | Halichoeres semicinctus | rock wrasse |
| Fishes | Haplochromis callipterus | eastern happy |
| Fishes | Helostoma temmincki | kissing gourami |
| Fishes | Hemichromis elongatus | banded jewelfish |
| Fishes | Hemichromis letourneuxi | African jewelfish |
| Fishes | Hemigrammus ocellifer | head-and-taillight tetra |
| Fishes | Heniochus intermedius | Red Sea bannerfish |
| Fishes | Heniochus sp. | bannerfish |
| Fishes | Herklotsichthys quadrimaculatus | goldspot herring |
| Fishes | Heros severus | banded cichlid |
| Fishes | Hesperoleucus symmetricus | California roach |
| Fishes | Heterandria formosa | least killifish |
| Fishes | Hiodon alosoides | goldeye |
| Fishes | Hiodon tergisus | mooneye |
| Fishes | Hoplias malabaricus | trahira |
| Fishes | Hoplosternum littorale | brown hoplo |
| Fishes | Hybognathus hankinsoni | brassy minnow |
| Fishes | Hybognathus nuchalis | Mississippi silvery minnow |
| Fishes | Hybognathus placitus | plains minnow |
| Fishes | Hybognathus regius | eastern silvery minnow |
| Fishes | Hybopsis amblops | bigeye chub |
| Fishes | Hybopsis winchelli | clear chub |
| Fishes | Hypentelium etowanum | Alabama hog sucker |
| Fishes | Hypentelium nigricans | northern hog sucker |
| Fishes | Hyphessobrycon serpae | serpae tetra |
| Fishes | Hypomesus nipponensis | wakasagi |
| Fishes | Hypomesus transpacificus | delta smelt |
| Fishes | Hypophthalmichthys molitrix | silver carp |
| Fishes | Hypophthalmichthys molitrix x nobilis | hybrid silver/bighead carp |
| Fishes | Hypophthalmichthys nobilis | bighead carp |
| Fishes | Hypostomus plecostomus | suckermouth catfish |
| Fishes | Hypostomus sp. | suckermouth catfish |
| Fishes | Hypostomus sp. (watwata group) | suckermouth catfish |
| Fishes | Hypsoblennius invemar | tessellated blenny |
| Fishes | Hypsoblennius ionthas | freckled blenny |
| Fishes | Hypsopsetta guttulata | diamond turbot |
| Fishes | Hysterocarpus traskii | tule perch |
| Fishes | Ichthyomyzon unicuspis | silver lamprey |
| Fishes | Ictalurus furcatus | blue catfish |
| Fishes | Ictalurus pricei | Yaqui catfish |
| Fishes | Ictalurus punctatus | channel catfish |
| Fishes | Ictalurus punctatus? | Mississippi catfish |
| Fishes | Ictalurus sp. | catfish |
| Fishes | Ictiobus bubalus | smallmouth buffalo |
| Fishes | Ictiobus cyprinellus | bigmouth buffalo |
| Fishes | Ictiobus niger | black buffalo |
| Fishes | Iotichthys phlegethontis | least chub |
| Fishes | Jordanella floridae | flagfish |
| Fishes | Kuhlia rupestris | Rock flagtail |
| Fishes | Labeo chrysophekadion | black sharkminnow |
| Fishes | Labeotropheus sp. | scrapermouth cichlid |
| Fishes | Labidesthes sicculus | brook silverside |
| Fishes | Lampetra appendix | American brook lamprey |
| Fishes | Lates angustifrons | Tanganyika lates |
| Fishes | Lates mariae | bigeye lates |
| Fishes | Lates niloticus | Nile perch |
| Fishes | Lavinia exilicauda | hitch |
| Fishes | Leiostomus xanthurus | spot |
| Fishes | Lepidomeda albivallis | White River spinedace |
| Fishes | Lepidomeda mollispinis pratensis | Big Spring spinedace |
| Fishes | Lepidomeda mollispinis mollispinis | virgin spinedace |
| Fishes | Lepisosteus oculatus | spotted gar |
| Fishes | Lepisosteus platostomus | shortnose gar |
| Fishes | Lepisosteus platyrhinchus | Florida gar |
| Fishes | Lepisosteus sp. | gar |
| Fishes | Lepomis auritus | redbreast sunfish |
| Fishes | Lepomis auritus x L. macrochirus | redbreast sunfish x bluegill |
| Fishes | Lepomis cyanellus | green sunfish |
| Fishes | Lepomis cyanellus x L. macrochirus | green sunfish x bluegill |
| Fishes | Lepomis gibbosus | pumpkinseed |
| Fishes | Lepomis gibbosus x macrochirus | warmouth x bluegill |
| Fishes | Lepomis gulosus | warmouth |
| Fishes | Lepomis humilis | orangespotted sunfish |
| Fishes | Lepomis hybrids | hybrid sunfish |
| Fishes | Lepomis macrochirus | bluegill |
| Fishes | Lepomis macrochirus speciosus | bluegill |
| Fishes | Lepomis macrochirus x L. microlophus | bluegill x redear sunfish |
| Fishes | Lepomis marginatus | dollar sunfish |
| Fishes | Lepomis megalotis | longear sunfish |
| Fishes | Lepomis microlophus | redear sunfish |
| Fishes | Lepomis miniatus | redspotted sunfish |
| Fishes | Lepomis sp. | sunfish |
| Fishes | Leporinus fasciatus | banded leporinus |
| Fishes | Lethrinus sp. | emperor |
| Fishes | Leuciscus idus | ide |
| Fishes | Leuresthes sardina | Gulf grunion |
| Fishes | Limia vittata | Cuban limia |
| Fishes | Lota lota | burbot |
| Fishes | Lota lota lacustris | eastern burbot |
| Fishes | Lucania goodei | bluefin killifish |
| Fishes | Lucania parva | rainwater killifish |
| Fishes | Lutjanus fulvus | blacktail snapper |
| Fishes | Lutjanus gibbus | humpback snapper |
| Fishes | Lutjanus guttatus | spotted rose snapper |
| Fishes | Lutjanus kasmira | bluestripe snapper |
| Fishes | Lutjanus sebae | emperor snapper |
| Fishes | Luxilus albeolus | white shiner |
| Fishes | Luxilus cerasinus | crescent shiner |
| Fishes | Luxilus chrysocephalus isolepis | striped shiner |
| Fishes | Luxilus chrysocephalus | striped shiner |
| Fishes | Luxilus coccogenis | warpaint shiner |
| Fishes | Luxilus cornutus | common shiner |
| Fishes | Luxilus zonistius | bandfin shiner |
| Fishes | Lythrurus ardens | rosefin shiner |
| Fishes | Lythrurus atrapiculus | blacktip shiner |
| Fishes | Lythrurus fasciolaris | scarlet shiner |
| Fishes | Lythrurus matutinus | pinewoods shiner |
| Fishes | Macrhybopsis meeki | sicklefin chub |
| Fishes | Macrognathus siamensis | spotfin spiny eel |
| Fishes | Macropodus opercularis | paradisefish |
| Fishes | Margariscus margarita | pearl dace |
| Fishes | Meda fulgida | spikedace |
| Fishes | Megalops atlanticus | tarpon |
| Fishes | Melanochromis auratus | golden mbuna |
| Fishes | Melanochromis johannii | bluegray mbuna |
| Fishes | Melanotaenia nigrans | black-banded rainbowfish |
| Fishes | Membras martinica | rough silverside |
| Fishes | Menidia beryllina | inland silverside |
| Fishes | Menticirrhus nasus | highfin kingfish |
| Fishes | Menticirrhus undulatus | California corbina |
| Fishes | Metynnis hypsauchen | silver dollar |
| Fishes | Metynnis sp. | metynnis |
| Fishes | Micropogonias megalops | Gulf croaker |
| Fishes | Micropogonias undulatus | Atlantic croaker |
| Fishes | Micropterus cataractae | shoal bass |
| Fishes | Micropterus coosae | redeye bass |
| Fishes | Micropterus dolomieu | smallmouth bass |
| Fishes | Micropterus punctulatus henshalli | Alabama spotted bass |
| Fishes | Micropterus punctulatus | spotted bass |
| Fishes | Micropterus punctulatus punctulatus | northern spotted bass |
| Fishes | Micropterus salmoides | largemouth bass |
| Fishes | Micropterus salmoides floridanus x salmoides | largemouth bass hybrid |
| Fishes | Micropterus salmoides floridanus | Florida largemouth bass |
| Fishes | Micropterus salmoides salmoides | northern largemouth bass |
| Fishes | Micropterus sp. | black bass |
| Fishes | Micropterus treculii | Guadalupe bass |
| Fishes | Minytrema melanops | spotted sucker |
| Fishes | Misgurnus anguillicaudatus | Oriental weatherfish |
| Fishes | Misgurnus mizolepis | Chinese fine-scaled loach |
| Fishes | Moapa coriacea | Moapa dace |
| Fishes | Moenkhausia sanctaefilomenae | redeye tetra |
| Fishes | Monopterus albus | Asian swamp eel |
| Fishes | Monopterus sp. | Asian swamp eel |
| Fishes | Morone americana | white perch |
| Fishes | Morone americana x M. mississippiensis | white perch x yellow bass |
| Fishes | Morone americana x M. saxatilis | white perch x striped bass |
| Fishes | Morone chrysops | white bass |
| Fishes | Morone chrysops x M. americana | white bass x white perch |
| Fishes | Morone chrysops x M. mississippiensis | white bass x yellow bass |
| Fishes | Morone chrysops x M. saxatilis | wiper |
| Fishes | Morone mississippiensis | yellow bass |
| Fishes | Morone mississippiensis x M. saxatilis | yellow bass x striped bass |
| Fishes | Morone saxatilis | striped bass |
| Fishes | Moxostoma cervinum | black jumprock |
| Fishes | Moxostoma erythrurum | golden redhorse |
| Fishes | Moxostoma lachneri | greater jumprock |
| Fishes | Moxostoma macrolepidotum pisolabrum | shorthead redhorse |
| Fishes | Moxostoma rupiscartes | striped jumprock |
| Fishes | Mugil cephalus | striped mullet |
| Fishes | Mugil curema | white mullet |
| Fishes | Mugilogobius cavifrons | mangrove goby |
| Fishes | Mugilogobius parvus | helmeted goby |
| Fishes | Myleus rubripinnis | redhook pacu |
| Fishes | Mylocheilus caurinus | peamouth |
| Fishes | Mylopharyngodon piceus | black carp |
| Fishes | Naso lituratus | orangespine unicornfish |
| Fishes | Nematistius pectoralis | roosterfish |
| Fishes | Neogobius [=Apollonia] melanostoma | round goby |
| Fishes | Nocomis biguttatus | hornyhead chub |
| Fishes | Nocomis leptocephalus bellicus | bluehead chub |
| Fishes | Nocomis leptocephalus | bluehead chub |
| Fishes | Nocomis micropogon | river chub |
| Fishes | Nocomis raneyi | bull chub |
| Fishes | Notemigonus crysoleucas | golden shiner |
| Fishes | Nothobranchius guentheri | redtail notho |
| Fishes | Notropis amoenus | comely shiner |
| Fishes | Notropis anogenus | pugnose shiner |
| Fishes | Notropis ariommus | popeye shiner |
| Fishes | Notropis atherinoides | emerald shiner |
| Fishes | Notropis baileyi | rough shiner |
| Fishes | Notropis bairdi | Red River shiner |
| Fishes | Notropis bifrenatus | bridle shiner |
| Fishes | Notropis blennius | river shiner |
| Fishes | Notropis boops | bigeye shiner |
| Fishes | Notropis buccatus | silverjaw minnow |
| Fishes | Notropis buccula | smalleye shiner |
| Fishes | Notropis buchanani | ghost shiner |
| Fishes | Notropis chiliticus | redlip shiner |
| Fishes | Notropis chrosomus | rainbow shiner |
| Fishes | Notropis dorsalis | bigmouth shiner |
| Fishes | Notropis girardi | Arkansas River shiner |
| Fishes | Notropis harperi | redeye chub |
| Fishes | Notropis heterolepis | eastern blacknose shiner |
| Fishes | Notropis hudsonius | spottail shiner |
| Fishes | Notropis hypsilepis | highscale shiner |
| Fishes | Notropis leuciodus | Tennessee shiner |
| Fishes | Notropis longirostris | longnose shiner |
| Fishes | Notropis lutipinnis | yellowfin shiner |
| Fishes | Notropis nubilus | Ozark minnow |
| Fishes | Notropis oxyrhynchus | sharpnose shiner |
| Fishes | Notropis ozarcanus | Ozark shiner |
| Fishes | Notropis potteri | chub shiner |
| Fishes | Notropis procne | swallowtail shiner |
| Fishes | Notropis rubellus | rosyface shiner |
| Fishes | Notropis rubricroceus | saffron shiner |
| Fishes | Notropis shumardi | silverband shiner |
| Fishes | Notropis spectrunculus | mirror shiner |
| Fishes | Notropis stramineus | sand shiner |
| Fishes | Notropis stramineus missuriensis | sand shiner |
| Fishes | Notropis telescopus | telescope shiner |
| Fishes | Notropis texanus | weed shiner |
| Fishes | Notropis volucellus | mimic shiner |
| Fishes | Notropis xaenocephalus | Coosa shiner |
| Fishes | Noturus exilis | slender madtom |
| Fishes | Noturus flavus | stonecat |
| Fishes | Noturus gilberti | orangefin madtom |
| Fishes | Noturus gyrinus | tadpole madtom |
| Fishes | Noturus insignis | margined madtom |
| Fishes | Noturus miurus | brindled madtom |
| Fishes | Noturus nocturnus | freckled madtom |
| Fishes | Novumbra hubbsi | Olympic mudminnow |
| Fishes | Omobranchus ferox | fang-toothed blenny |
| Fishes | Oncorhynchus aguabonita | golden trout |
| Fishes | Oncorhynchus clarkii virginalis | Rio Grande cutthroat trout |
| Fishes | Oncorhynchus clarkii | cutthroat trout |
| Fishes | Oncorhynchus clarkii lewisi | west slope cutthroat trout |
| Fishes | Oncorhynchus clarkii seleniris | Paiute cutthroat trout |
| Fishes | Oncorhynchus clarkii pleuriticus | Colorado River cutthroat trout |
| Fishes | Oncorhynchus clarkii ssp. 2 | Pikes Peak cutthroat trout |
| Fishes | Oncorhynchus clarkii stomias | greenback cutthroat trout |
| Fishes | Oncorhynchus clarkii utah | Bonneville cutthroat trout |
| Fishes | Oncorhynchus clarkii bouvieri | Yellowstone cutthroat trout |
| Fishes | Oncorhynchus clarkii carmichaeli | fine-spotted Snake River cutthroat trout |
| Fishes | Oncorhynchus clarkii henshawi | Lahontan cutthroat trout |
| Fishes | Oncorhynchus clarkii ssp. 1 | Bear Lake cutthroat trout |
| Fishes | Oncorhynchus clarkii x mykiss | cutbow trout |
| Fishes | Oncorhynchus gilae apache | Apache trout |
| Fishes | Oncorhynchus gilae | Gila trout |
| Fishes | Oncorhynchus gorbuscha | pink salmon |
| Fishes | Oncorhynchus keta | chum salmon |
| Fishes | Oncorhynchus kisutch | coho salmon |
| Fishes | Oncorhynchus masou | cherry salmon |
| Fishes | Oncorhynchus mykiss irideus | coast rainbow trout |
| Fishes | Oncorhynchus mykiss whitei | Little Kern golden trout |
| Fishes | Oncorhynchus mykiss kamloops strain | Kamloops trout |
| Fishes | Oncorhynchus mykiss ssp. | redband trout |
| Fishes | Oncorhynchus mykiss | rainbow trout |
| Fishes | Oncorhynchus nerka | kokanee, sockeye |
| Fishes | Oncorhynchus tshawytscha | Chinook salmon |
| Fishes | Opisthonema libertate | deepbody thread herring |
| Fishes | Oreochromis aureus | blue tilapia |
| Fishes | Oreochromis aureus x mossambicus | blue x Mozambique tilapia |
| Fishes | Oreochromis macrochir | longfin tilapia |
| Fishes | Oreochromis mossambicus | Mozambiqua tilapia |
| Fishes | Oreochromis mossambicus x hornorum | hybrid tilapia |
| Fishes | Oreochromis niloticus | Nile tilapia |
| Fishes | Oreochromis sp. | Tilapia species |
| Fishes | Oreochromis urolepis | Wami tilapia |
| Fishes | Oreochromis urolepis hornorum | Wami tilapia |
| Fishes | Oreochromis urolepis hornorum x mossambicus | hybrid tilapia |
| Fishes | Oreochromis, Sarotherodon, Tilapia sp. | tilapia |
| Fishes | Oreochromis, Sarotherodon, Tilapia sp. x sp. | hybrid tilapia |
| Fishes | Orthodon microlepidotus | Sacramento blackfish |
| Fishes | Oryzias latipes | Japanese medaka |
| Fishes | Osmerus mordax | rainbow smelt |
| Fishes | Osphronemus gorami | giant gourami |
| Fishes | Osteoglossum bicirrhosum | arawana, arowana, aruana |
| Fishes | Otocinclus sp. | suckermouth catfish |
| Fishes | Pangasius hypophthalmus | iridescent shark |
| Fishes | Pangio kuhlii | coolie loach |
| Fishes | Parablennius thysanius | blenny |
| Fishes | Paracheirodon innesi | neon tetra |
| Fishes | Parachromis dovii | wolf cichlid |
| Fishes | Parachromis [=Cichlasoma] managuense | jaguar guapote |
| Fishes | Paralabrax maculatofasciatus | spotted sand bass |
| Fishes | Paralichthys aestuarius | Cortez halibut |
| Fishes | Paralichthys albigutta | Gulf flounder |
| Fishes | Paralichthys lethostigma | southern flounder |
| Fishes | Paralichthys woolmani | dappled flounder |
| Fishes | Parauchenipterus galeatus | driftwood catfish |
| Fishes | Peckoltia sp. | clown pleco |
| Fishes | Pelvicachromis pulcher | rainbow krib |
| Fishes | Peprilus simillimus | Pacific butterfish |
| Fishes | Perca flavescens | yellow perch |
| Fishes | Percina caprodes | logperch |
| Fishes | Percina macrolepida | bigscale logperch |
| Fishes | Percina maculata | blackside darter |
| Fishes | Percina nigrofasciata | blackbanded darter |
| Fishes | Percina notogramma | stripeback darter |
| Fishes | Percina peltata | shield darter |
| Fishes | Percina roanoka | Roanoke darter |
| Fishes | Percina shumardi | river darter |
| Fishes | Percina tanasi | snail darter |
| Fishes | Percopsis omiscomaycus | trout-perch |
| Fishes | Perrunichthys perruno | leopard catfish |
| Fishes | Petromyzon marinus | sea lamprey |
| Fishes | Phenacobius mirabilis | suckermouth minnow |
| Fishes | Phenacogrammus interruptus | Congo tetra |
| Fishes | Phoxinus eos | northern redbelly dace |
| Fishes | Phoxinus neogaeus | finescale dace |
| Fishes | Phoxinus oreas | mountain redbelly dace |
| Fishes | Phractocephalus hemioliopterus | redtail catfish |
| Fishes | Piaractus brachypomus | pirapatinga, red-bellied pacu |
| Fishes | Piaractus mesopotamicus | small-scaled pacu |
| Fishes | Pimephales notatus | bluntnose minnow |
| Fishes | Pimephales promelas | fathead minnow |
| Fishes | Pimephales tenellus | slim minnow |
| Fishes | Pimephales vigilax | bullhead minnow |
| Fishes | Plagopterus argentissimus | woundfin |
| Fishes | Platax orbicularis | orbiculate batfish |
| Fishes | Platichthys flesus | European flounder |
| Fishes | Platichthys stellatus | starry flounder |
| Fishes | Platydoras costatus | Raphael catfish |
| Fishes | Platygobio gracilis | flathead chub |
| Fishes | Platytropius siamensis | false Siamese shark |
| Fishes | Plecoglossus altivelis | ayu |
| Fishes | Plectorhinchus chaetodonoides | spotted sweetlip |
| Fishes | Poecilia formosa | Amazon molly |
| Fishes | Poecilia hybrid | lyretail black molly |
| Fishes | Poecilia latipinna | sailfin molly |
| Fishes | Poecilia latipinna x velifera | black molly |
| Fishes | Poecilia latipunctata | Tamesi molly |
| Fishes | Poecilia mexicana | shortfin molly |
| Fishes | Poecilia petenensis | Peten molly |
| Fishes | Poecilia reticulata | guppy |
| Fishes | Poecilia sp. | unidentified poeciliid (hybrid) |
| Fishes | Poecilia sphenops | Mexican molly |
| Fishes | Poecilia vivipara | Guaru |
| Fishes | Poeciliopsis gracilis | porthole livebearer |
| Fishes | Poeciliopsis occidentalis occidentalis | Gila topminnow |
| Fishes | Poeciliopsis sp. | unidentified Poeciliopsis |
| Fishes | Pogonias cromis | black drum |
| Fishes | Pogonias x Sciaenops cromis x ocellatus | black drum x red drum |
| Fishes | Pogonichthys macrolepidotus | splittail |
| Fishes | Polyodon spathula | paddlefish |
| Fishes | Polypterus delhezi | bichir |
| Fishes | Pomacanthus annularis | blue ringed angelfish |
| Fishes | Pomacanthus asfur | Arabian angel |
| Fishes | Pomacanthus imperator | emperor angelfish |
| Fishes | Pomacanthus maculosus | yellowbar angelfish |
| Fishes | Pomacanthus semicirculatus | semicircle angelfish, zebra angelfish |
| Fishes | Pomacanthus xanthometopon | bluefaced angel |
| Fishes | Pomoxis annularis | white crappie |
| Fishes | Pomoxis nigromaculatus | black crappie |
| Fishes | Pomoxis sp. | crappie |
| Fishes | Prosopium cylindraceum | round whitefish |
| Fishes | Prosopium gemmifer | Bonneville cisco |
| Fishes | Prosopium williamsoni | mountain whitefish |
| Fishes | Proterorhinus semilunaris | tubenose goby |
| Fishes | Pseudodoras niger | ripsaw catfish |
| Fishes | Pseudoplatystoma fasciatum | tiger catfish |
| Fishes | Pseudotropheus sp. | African Lake cichlid |
| Fishes | Pseudotropheus zebra | zebra mbuna |
| Fishes | Pterodoras granulosus | granulated catfish |
| Fishes | Pterodoras sp. | thorny catfish |
| Fishes | Pterois volitans/miles | lionfish |
| Fishes | Pterophyllum scalare | freshwater angelfish |
| Fishes | Pterophyllum sp. | freshwater angelfish |
| Fishes | Pterygoplichthys anisitsi | southern sailfin catfish |
| Fishes | Pterygoplichthys disjunctivus | vermiculated sailfin catfish |
| Fishes | Pterygoplichthys multiradiatus | Orinoco sailfin catfish |
| Fishes | Pterygoplichthys pardalis | Amazon sailfin catfish |
| Fishes | Pterygoplichthys sp. | sailfin catfish |
| Fishes | Ptychocheilus grandis | Sacramento pikeminnow |
| Fishes | Ptychocheilus umpquae | Umpqua pikeminnow |
| Fishes | Pungitius pungitius | ninespine stickleback |
| Fishes | Puntius conchonius | rosy barb |
| Fishes | Puntius filamentosus | blackspot barb |
| Fishes | Puntius gelius | dwarf barb |
| Fishes | Puntius semifasciolatus | green barb |
| Fishes | Puntius tetrazona | tiger barb |
| Fishes | Pygocentrus nattereri | red piranha |
| Fishes | Pygocentrus or Serrasalmus sp. | unidentified piranha |
| Fishes | Pygoplites diacanthus | Regal angelfish |
| Fishes | Pylodictis olivaris | flathead catfish |
| Fishes | Relictus solitarius | relict dace |
| Fishes | Rhamdia quelen | bagre |
| Fishes | Rhinecanthus aculeatus | Lagoon Triggerfish |
| Fishes | Rhinecanthus verrucosus | bursa triggerfish |
| Fishes | Rhinichthys atratulus | blacknose dace |
| Fishes | Rhinichthys cataractae | longnose dace |
| Fishes | Rhinichthys osculus robustus | Lahontan speckled dace |
| Fishes | Rhinichthys osculus klamathensis | Klamath speckled dace |
| Fishes | Rhinichthys osculus | speckled dace |
| Fishes | Rhinogobius brunneus | Amur goby |
| Fishes | Rhodeus sericeus | bitterling |
| Fishes | Richardsonius balteatus hydrophlox | Bonneville redside shiner |
| Fishes | Richardsonius balteatus | redside shiner |
| Fishes | Richardsonius egregius | Lahontan redside |
| Fishes | Rivulus hartii | giant rivulus |
| Fishes | Salmo letnica | Ohrid trout |
| Fishes | Salmo salar | Atlantic salmon |
| Fishes | Salmo salar salar | Atlantic salmon |
| Fishes | Salmo salar sebago | landlocked Atlantic salmon |
| Fishes | Salmo salar x trutta | Sambrown |
| Fishes | Salmo trutta | brown trout |
| Fishes | Salmo trutta levenensis | brown trout |
| Fishes | Salmo x Salvelinus trutta x fontinalis | tiger trout |
| Fishes | Salvelinus alpinus | Arctic char |
| Fishes | Salvelinus aureolus oquassa | blueback trout, Sunapee trout |
| Fishes | Salvelinus confluentus | bull trout |
| Fishes | Salvelinus European sp. | European species of trout |
| Fishes | Salvelinus fontinalis | brook trout |
| Fishes | Salvelinus fontinalis x namaycush | splake |
| Fishes | Salvelinus malma | Dolly Varden |
| Fishes | Salvelinus namaycush | lake trout |
| Fishes | Sander canadensis | sauger |
| Fishes | Sander canadensis x vitreus | saugeye |
| Fishes | Sander lucioperca | zander |
| Fishes | Sander vitreus | walleye |
| Fishes | Sardinella marquesensis | Marquesan sardine |
| Fishes | Sarotherodon melanotheron | blackchin tilapia |
| Fishes | Scardinius erythrophthalmus | rudd |
| Fishes | Scatophagus argus | scat |
| Fishes | Sciaenops ocellatus | red drum |
| Fishes | Scomberomorus concolor | Gulf sierra |
| Fishes | Semotilus atromaculatus | creek chub |
| Fishes | Semotilus corporalis | fallfish |
| Fishes | Serrasalmus rhombeus | white piranha |
| Fishes | Simpsonichthys whitei | Rio pearlfish |
| Fishes | Snyderichthys copei | leatherside chub |
| Fishes | Sorubim spp. | unidentified shovelnose catfish |
| Fishes | Sorubimichthys planiceps | firewood catfish |
| Fishes | Strongylura marina | Atlantic needlefish |
| Fishes | Symphysodon discus | red discus |
| Fishes | Synodontis sp. | squeaker |
| Fishes | Tanichthys albonubes | white cloud mountain minnow |
| Fishes | Tautoga onitis | tautog |
| Fishes | Telmatochromis bifrenatus | Lake Tanganyika dwarf cichlid |
| Fishes | Tetraodon nigroviridis | spotted green pufferfish |
| Fishes | Theraps melanurus x T. zonatus | Theraps hybrid |
| Fishes | Thoburnia rhothoeca | torrent sucker |
| Fishes | Thymallus arcticus | Arctic grayling |
| Fishes | Tilapia buttikoferi | zebra tilapia |
| Fishes | Tilapia mariae | spotted tilapia |
| Fishes | Tilapia rendalli | redbreast tilapia |
| Fishes | Tilapia sp. | unidentified tilapia |
| Fishes | Tilapia sparrmani | banded tilapia |
| Fishes | Tilapia zillii | redbelly tilapia |
| Fishes | Tinca tinca | tench |
| Fishes | Totoaba macdonaldi | totoaba |
| Fishes | Trachinotus paitensis | paloma pompano |
| Fishes | Trichogaster leerii | pearl gourami |
| Fishes | Trichogaster trichopterus sumatranus | blue gourami |
| Fishes | Trichopsis vittata | croaking gourami |
| Fishes | Tridentiger barbatus | Shokihaze goby |
| Fishes | Tridentiger bifasciatus | Shimofuri goby |
| Fishes | Tridentiger trigonocephalus | chameleon goby |
| Fishes | Typhlichthys subterraneus | southern cavefish |
| Fishes | Umbra limi | central mudminnow |
| Fishes | unknown sp. | trout |
| Fishes | Upeneus vittatus | bandedtail goatfish |
| Fishes | Valamugil engeli | kanda |
| Fishes | Xenentodon cancila | Asian needlefish |
| Fishes | Xiphophorus hellerii | green swordtail |
| Fishes | Xiphophorus hellerii x maculatus | red swordtail |
| Fishes | Xiphophorus hellerii x variatus | platyfish/swordtail |
| Fishes | Xiphophorus maculatus | southern platyfish |
| Fishes | Xiphophorus maculatus x variatus | platyfish/swordtail |
| Fishes | Xiphophorus sp. | platyfish |
| Fishes | Xiphophorus variatus | variable platyfish |
| Fishes | Xiphophorus xiphidium | swordtail platy |
| Fishes | Zanclus cornutus | Moorish Idol |
| Fishes | Zebrasoma desjardinii | sailfin tang |
| Fishes | Zebrasoma flavescens | yellow tang |
| Fishes | Zebrasoma scopas | Brown tang |
| Fishes | Zebrasoma veliferum | sailfin tang |
| Fishes | Zebrasoma xanthurum | yellowtail tang |