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Group of Devils Hole pupfish. The Devils Hole pupfish is the smallest pupfish species in the genus Cyprinodon, [18] with lengths up to 30 mm (1.2 in). [18] The average length is 23 mm (0.9 in). [19] Males and females differ in coloration. Males are overall dark brown with metallic blue on their sides.
The Devils Hole pupfish reached a 25-year high spring count of 191 fish. For years, the fish’s population dwindled, hitting an “all-time low of 35 in 2013,” the National Park Service said in ...
Before the mid-1990s, scientists counted between 200 and 250 Devils Hole pupfish each spring. But over the course of about 20 years, the fish's population count dropped to an average of about 90 ...
Devils Hole pupfish, Cyprinodon diabolis, from Death Valley National Park. Devils Hole is the only natural habitat of the Devils Hole pupfish, which survives despite the hot, oxygen-poor water. [19] Devils Hole "may be the smallest habitat in the world containing the entire population of a vertebrate species". [4]
Cyprinodon variegatus is the most widespread member of the genus. Cyprinodon diabolis is very rare; its entire native range is the Devils Hole in Nevada. A few Cyprinodon species have quite large ranges, notably C. variegatus, but the vast majority have small ranges, typically restricted to one or two Mexican states or U.S. states, Hispaniola, or a Bahaman island.
The waves disrupted the shallow shelf inside the Devils Hole, the pupfish’s spawning area, knocking most of the organic matter from the shelf into the 500-foot-deep cavern, the NPS said.
The Devils Hole pupfish (Cyprinodon diabolis) is a specific species native to Nevada. There are fewer than 200 individuals since 2005. Their population size usually fluctuates between 37 and 400 fish. They are considered one of the world's rarest fish. These fish live in 94 °F (34.4 °C) waters. [12]
The highly endangered Devils Hole pupfish have previously survived seiches, most recently in 2018, 2019, and 2022, NPS said. The fish compensate by increasing spawning activity. The fish ...