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.

devil's hole pupfish Cyprinodon diabolis
(an endangered species)
Found in Devil's 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
(a threatened species)
Found in Cottonball Marsh on the west side of central Death Valley.

western mosquitofish Gambusia affinis
(an introduced species)
Introduced into Furnace Creek irrigation ditches and ponds.