This species is characterized by the following: Dorsal XII, 7; anal II, 5; pectoral 10-11; pelvic I, 3; caudal 16-17; with all fin rays unbranched; vertebrae 24. Dorsal fin with anterior, middle and posterior portions notably elevated, first interspace moderately scalloped, second deeply notched; the dorsal membrane is connected posteriorly to the caudal peduncle; head, body and fins densely covered with scales, modified to form velvety prickles; a small fleshy extension on the anterior of the isthmus; frontal ridges parallel on interorbital; body and fins variously marked with pale or white blotches, or small irregular spots (Ref. 57897).