here is the official list of all threatened and endangered fish in the US...
Fishes
Status Species Name
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, 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 ( Cyprinella monacha)
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 Darter, boulder ( Etheostoma wapiti)
T Darter, Cherokee ( Etheostoma scotti)
E,XN 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,XN 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,XN 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)
T Salmon, coho ( Oncorhynchus (=Salmo) kisutch)
E,T Salmon, sockeye ( Oncorhynchus (=Salmo) nerka)
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)
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,XN Woundfin ( Plagopterus argentissimus)
notice gar isnt one of them