The Tecopa pupfish had the ability to live in water temperatures of more than 100 degrees Fahrenheit.
The Tecopa pupfish got its name from where it lived, in the outflows of the Tecopa Hot Springs in California. Because of the fluctuating water temperatures, the Tecopa pupfish survived in water as cold as 50 degrees Fahrenheit and as hot as 108 degrees Fahrenheit.
The species was officially declared extinct in 1981 after Fish and Wildlife Service searched over 40 locations and found no trace of the animal.