Body oblong; dorsal profile moderately convex and snout blunt; interorbital space broad and convex; fleshy lips with papillae; two tooth plates in jaws, teeth fused together into a beak-like structure; nasal organ easily visible without magnification; dorsal surface of posterior eyes more or less smooth. Nasal organ close before superior half of eye, forms a depression with a slightly raised margin; Nasal organ not covered by a small sac with two nostrils; spinules on whole sides of body but not on the caudal peduncle; gill opening not reaching below lower ray of pectoral fin base; lateral line inconspicuous; two lateral lines, the upper joining the lower in the region above or behind the anal fin, expanded before and behind into a pair elongated flaps. Caudal fin truncate slightly rounded.