The Etowah darter is an extremely imperiled fish species, confined to a restricted range within a single river system, and federally listed as Endangered (USFWS 1993, 1985). The Etowah darter occurs only in the Etowah River system above Allatoona Reservoir in Cherokee, Pickens, Forsyth, Dawson, and Lumpkin Counties in Georgia (Freeman 1999). The species was described in 1993 by Wood and Mayden as a member of the subgenus Nothonotus and the greenbreast darter species group. As such, it probably exhibits similar life history traits. Maximum size is about 2.8 inches. Preferred habitat is riffles over gravel and cobble substrates in the main channel of the river and larger tributaries.
In 2004 and 2005 CFI successfully propagated small numbers of these individuals. Spawning started in early to mid May and lasted through July. Propagated individuals were later used as a part of a mark-recapture project.