Devil’s Hole Pupfish is an extraordinary little fish that is capable of living in hot springs, with temperatures up to 90 degrees. These fish live inside a limestone cave located outside of Death Valley.
The little fish is an aquatic wonder that manages to live in a rather small hot spring that denies it the ability to migrate upstream or downstream.
The little fish in the spring climb up to a small shelf of rock, just below the surface of the water, to both feed and breed.
This fish has also the record, among all vertebrates, of the smallest habitat of diffusion: just 20 m2, in the superficial muddy waters of a natural well, more than 100 metres deep and called Devil’s Hole, in the Amargosa Desert, about 60 kilometres east of Death Valley, in western Nevada. The small size of the habitat means that the number of mature individuals of this species is less than 100.
