This species is distinguished by the following characters: a major portion of dentary gland dorsally positioned and held in place laterally by a dorsolateral flange of dentary; D IV,25; A II,13. Colouration: a single, dark, mid-lateral stripe extending from tip of snout and behind eye, slightly onto dorsal part of pectoral-fin base, and terminating at base of caudal fin, color immediately above and below mid-lateral stripe white when alive; dorsal-fin base with a dark stripe beginning below fourth spine, extending to about half of dorsal-fin height at middle of fin, tapering strongly at caudal peduncle; dorsal fin with a proximal black stripe bordered by a white stripe, and a submarginal dark stripe widest on the spinous dorsal fin and tapering posteriorly to about third of fin; anal and caudal fins are pale and unmarked (Ref. 123060).