 Adult males have 10–14 dark vertical bars and the eponymous dorsal ocellus.During spawning season males develop dramatic coloration, consisting of vivid yellow-orange pigment extending over the belly, pelvic and anal fins, caudal peduncle, and caudal fin.Breeding males may also develop contact organs–small fleshy protuberances–on the head, sides of the body, and medial fins.