Vertebrae: 183 - 196. Brownish grey above, lighter below (Ref. 3257). Body moderately elongate, cylindrical in front, compressed along tail; eyes small; teeth small, biserial, inner series enlarged; head not obviously distinct from trunk although the profile is moderately steep; very large mouth, extending to well beyond eye; biserial sharp teeth on jaws, larger in front and in inner row; dorsal fin inserted on head before gill-opening; scales absent (Ref. 4832).