Satan eurystomus
Satan is a
genus of
catfish of the
family Ictaluridae. Commonly known as the "
Wide-mouth blind cat",
Satan eurystomus Hubbs, Bailey, 1947 was first found inhabiting a well, and is adapted for a light-less, subterranean environment. They are known only from subterranean streams more than 1/4 mile below ground and five artesian wells around
San Antonio, Texas.
The genus is most closely related to the Flathead Catfishes of the genus Pylodictis.