- amargosa pupfish
Cyprinodon nevadensis amargosa
Found in the Amargosa River northwest of Saratoga Springs.
- saratoga pupfish
Cyprinodon nevadensis nevadensis
Found at Saratoga Springs at the south end of Death Valley.
- Devils Hole pupfish
Found in Devils Hole, 37 miles east of Furnace Creek, in western Nevada.
- Salt Creek pupfish
Cyprinodon salinus salinus
Found in Salt Creek in the central part of Death Valley.
- Cottonball Marsh pupfish
Cyprinodon salinus milleri
Found in Cottonball Marsh on the west side of central Death Valley.
- western mosquitofish
Introduced into Furnace Creek irrigation ditches and ponds.