| T | Catfish, Yaqui (Ictalurus pricei) |
| E | Cavefish, Alabama (Speoplatyrhinus poulsoni) |
| T | Cavefish, Ozark (Amblyopsis rosae) |
| E | Chub, bonytail (Gila elegans) |
| E | Chub, Borax Lake (Gila boraxobius) |
| T | Chub, Chihuahua (Gila nigrescens) |
| E | Chub, Gila (Gila intermedia) |
| E | Chub, humpback (Gila cypha) |
| T | Chub, Hutton tui (Gila bicolor ssp.) |
| E | Chub, Mohave tui (Gila bicolor mohavensis) |
| E | Chub, Oregon (Oregonichthys crameri) |
| E | Chub, Owens tui (Gila bicolor snyderi) |
| E | Chub, Pahranagat roundtail (Gila robusta jordani) |
| T | Chub, slender (Erimystax cahni) |
| T | Chub, Sonora (Gila ditaenia) |
| XN,T | Chub, spotfin (Erimonax monachus) |
| E | Chub, Virgin River (Gila seminuda (=robusta)) |
| E | Chub, Yaqui (Gila purpurea) |
| E | Cui-ui (Chasmistes cujus) |
| E | Dace, Ash Meadows speckled (Rhinichthys osculus nevadensis) |
| T | Dace, blackside (Phoxinus cumberlandensis) |
| E | Dace, Clover Valley speckled (Rhinichthys osculus oligoporus) |
| T | Dace, desert (Eremichthys acros) |
| T | Dace, Foskett speckled (Rhinichthys osculus ssp.) |
| E | Dace, Independence Valley speckled (Rhinichthys osculus lethoporus) |
| E | Dace, Kendall Warm Springs (Rhinichthys osculus thermalis) |
| E | Dace, Moapa (Moapa coriacea) |
| E | Darter, amber (Percina antesella) |
| T | Darter, bayou (Etheostoma rubrum) |
| E | Darter, bluemask (=jewel) (Etheostoma /) |
| E,EXPN | Darter, boulder (Etheostoma wapiti) |
| T | Darter, Cherokee (Etheostoma scotti) |
| E,EXPN | Darter, duskytail (Etheostoma percnurum) |
| E | Darter, Etowah (Etheostoma etowahae) |
| E | Darter, fountain (Etheostoma fonticola) |
| T | Darter, goldline (Percina aurolineata) |
| T | Darter, leopard (Percina pantherina) |
| E | Darter, Maryland (Etheostoma sellare) |
| T | Darter, Niangua (Etheostoma nianguae) |
| E | Darter, Okaloosa (Etheostoma okaloosae) |
| E | Darter, relict (Etheostoma chienense) |
| T | Darter, slackwater (Etheostoma boschungi) |
| T | Darter, snail (Percina tanasi) |
| E | Darter, vermilion (Etheostoma chermocki) |
| E | Darter, watercress (Etheostoma nuchale) |
| E | Gambusia, Big Bend (Gambusia gaigei) |
| E | Gambusia, Clear Creek (Gambusia heterochir) |
| E | Gambusia, Pecos (Gambusia nobilis) |
| E | Gambusia, San Marcos (Gambusia georgei) |
| E | Goby, tidewater (Eucyclogobius newberryi) |
| E | Logperch, Conasauga (Percina jenkinsi) |
| E | Logperch, Roanoke (Percina rex) |
| T | Madtom, Neosho (Noturus placidus) |
| E | Madtom, pygmy (Noturus stanauli) |
| E | Madtom, Scioto (Noturus trautmani) |
| E,EXPN | Madtom, smoky (Noturus baileyi) |
| XN,T | Madtom, yellowfin (Noturus flavipinnis) |
| T | Minnow, Devils River (Dionda diaboli) |
| T | Minnow, loach (Tiaroga cobitis) |
| E | Minnow, Rio Grande silvery (Hybognathus amarus) |
| E,EXPN | Pikeminnow (=squawfish), Colorado (Ptychocheilus lucius) |
| E | Poolfish, Pahrump (Empetrichthys latos) |
| E | Pupfish, Ash Meadows Amargosa (Cyprinodon nevadensis mionectes) |
| E | Pupfish, Comanche Springs (Cyprinodon elegans) |
| E | Pupfish, desert (Cyprinodon macularius) |
| E | Pupfish, Devils Hole (Cyprinodon diabolis) |
| E | Pupfish, Leon Springs (Cyprinodon bovinus) |
| E | Pupfish, Owens (Cyprinodon radiosus) |
| E | Pupfish, Warm Springs (Cyprinodon nevadensis pectoralis) |
| E | Salmon, Atlantic (Salmo salar) |
| E,T | Salmon, chinook (Oncorhynchus (=Salmo) tshawytscha) |
| T | Salmon, chum (Oncorhynchus (=Salmo) keta) |
| E,T | Salmon, coho (Oncorhynchus (=Salmo) kisutch) |
| E,T | Salmon, sockeye (Oncorhynchus (=Salmo) nerka) |
| E | Sawfish, smalltooth (Pristis pectinata) |
| T | Sculpin, pygmy (Cottus paulus (=pygmaeus)) |
| T | Shiner, Arkansas River (Notropis girardi) |
| T | Shiner, beautiful (Cyprinella formosa) |
| T | Shiner, blue (Cyprinella caerulea) |
| E | Shiner, Cahaba (Notropis cahabae) |
| E | Shiner, Cape Fear (Notropis mekistocholas) |
| E | Shiner, palezone (Notropis albizonatus) |
| T | Shiner, Pecos bluntnose (Notropis simus pecosensis) |
| E | Shiner, Topeka (Notropis topeka (=tristis)) |
| T | Silverside, Waccamaw (Menidia extensa) |
| T | Smelt, delta (Hypomesus transpacificus) |
| T | Spikedace (Meda fulgida) |
| T | Spinedace, Big Spring (Lepidomeda mollispinis pratensis) |
| T | Spinedace, Little Colorado (Lepidomeda vittata) |
| E | Spinedace, White River (Lepidomeda albivallis) |
| E | Springfish, Hiko White River (Crenichthys baileyi grandis) |
| T | Springfish, Railroad Valley (Crenichthys nevadae) |
| E | Springfish, White River (Crenichthys baileyi baileyi) |
| E,T | Steelhead (Oncorhynchus (=Salmo) mykiss) |
| E | Stickleback, unarmored threespine (Gasterosteus aculeatus williamsoni |
| E | Sturgeon, Alabama (Scaphirhynchus suttkusi) |
| T | Sturgeon, gulf (Acipenser oxyrinchus desotoi) |
| E | Sturgeon, pallid (Scaphirhynchus albus) |
| E | Sturgeon, shortnose (Acipenser brevirostrum) |
| E | Sturgeon, white (Acipenser transmontanus) |
| E | Sucker, June (Chasmistes liorus) |
| E | Sucker, Lost River (Deltistes luxatus) |
| E | Sucker, Modoc (Catostomus microps) |
| E | Sucker, razorback (Xyrauchen texanus)v |
| T | Sucker, Santa Ana (Catostomus santaanae) |
| E | Sucker, shortnose (Chasmistes brevirostris) |
| T | Sucker, Warner (Catostomus warnerensis) |
| E | Topminnow, Gila (incl. Yaqui) (Poeciliopsis occidentalis) |
| T | Trout, Apache (Oncorhynchus apache) |
| T | Trout, bull (Salvelinus confluentus) |
| E | Trout, Gila (Oncorhynchus gilae) |
| T | Trout, greenback cutthroat (Oncorhynchus clarki stomias) |
| T | Trout, Lahontan cutthroat (Oncorhynchus clarki henshawi) |
| T | Trout, Little Kern golden (Oncorhynchus aguabonita whitei) |
| T | Trout, Paiute cutthroat (Oncorhynchus clarki seleniris) |
| E,EXPN | Woundfin (Plagopterus argentissimus) |
