Meda fulgida Girard 1856

The threatened demersal spikedace (Meda fulgida) is endemic to the Gila River system generally at elevations of 1800 to 2000 meters. This taxon is slender in form with a pointed snout and total body length of about eight centimeters. Coloration is olive-grey to brown above, with silvery sides that frequently exhibit blue flashes, accompanied with black speckling on the back and upper side. Breeding males manifest a bright, brassy yellow head and fins. Preferred spikedace habitat consists of moderately flowing streams with sand or gravel bottom; the species is threatened by stream channelization and adverse water quality impacts.