In southern Nevada, Devils Hole is home to warm underground water in a desert environment. It is the only natural habitat of Cyprinodon diabolis fish. Its area of life does not correspond to a river or a large lake, but to this cavity.
The water of the deep parts remains around 33.5 to 34 °C and contains little oxygen. On a shallow rocky shelf, fish find algae, invertebrates and other organisms to feed on. The water level is therefore crucial for their survival.
In 1976, the U.S. Supreme Court protected this level in a decision related to the conservation of the species. Numbers vary and cannot be summed up by an eternal number. The singularity of the place remains: the protection of a fish here implies preserving a very precise portion of an underground water system.
What we know
Only natural habitat; possible conservation populations not excluded, current number not affirmed.
To go to the source
References consulted on 3 October 2026. Linked pages may be in another language.
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