 The caudal fin is low and narrow, with an indistinct lower lobe and an upper lobe about as long as the head.The dermal denticles on the sides of the body are stout and thorn-shaped, widely spaced without any regular pattern; the snout is mostly covered by denticles.The dorsal coloration is dark brown to gray; the undersides of the body and snout are black, with a broad, black marking above and behind each pelvic fin, and thin, black marks on the tail.