This species is distinguished from its congeners by the following characters: a dark spot at anterior base of first dorsal fin and one medially at end of caudal peduncle; dorsal/anal fin-ray formula 8/7; cephalic sensory pore system pattern 2, no IT pore; unbranched pectoral-fin rays;

first dorsal fin of male may be elongate; the fifth pelvic-fin ray small, one-tenth to three-tenths length of fourth pelvic fin ray (Ref. 92021).