Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Relict darter - The relict darter Etheostoma chienense a rare species of fish in the perch family is endemic to Kentucky in the United States where it occurs only in the drainage of the Bayou du Chien a stream. It is a federally listed endangered species of the United States.This fish part of the Etheostoma squamiceps species complex was formally described in 1992. It grows up to about 7.2 cm in length.
A:
Animal