noun (plural same or pupfishes)
A small fish found in fresh or brackish water in the deserts of the south-western US and northern Mexico.
- Genus Cyprinodon, family Cyprinodontidae: several species.
- Most radically, we have extended protection to every endangered species, even the lowliest and most unprepossessing-the Furbish lousewort, the snail darter, the desert pupfish, the spotted owl.
- The small springs that harbor small populations of native pupfishes and other small fishes.
- In southern Arizona, an endangered fish, the Quitobaquito pupfish (Cyprinodon macularius eremus), inhabits the springs, stream, and pond at Quitobaquito on Organ Pipe Cactus National Monument.
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