D1 rudimentary; D2 absent; P1 absent; P2 absent. Body color brownish grey above, lighter below. Body moderately elongate, cylindrical in front, compressed along tail. Eyes small. Teeth small. 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.