This species has a deep laterally compressed body and sides that taper downward into a smooth ventral keel; the dorsal fin in located well behind the middle of the body' the length of the anal fin base is over twice the length of the dorsal fin base, and, in adults, the iris of the eye is a golden yellow. For further information, refer to McPhail (2008)
Source: McPail, J. D. 2008. The Freshwater Fishes of British Columbia. University of Alberta Press, Edmonton.