(Family):Dorsal spines 10 or 11. Lateral line along dorsal profile, ending midpoint of dorsal fin base. Pelvic fin preceding pectoral fin. (Genus):Posterior margin of caudal fin not round but lanceolate. (Species):A large black blotch on opercle. Some caudal rays branched. Anterior rays on dorsal and anal fins not branched. A distinct spine projecting backwards on opercle. Conical teeth in a series on both jaws.
Distribution:
Off Suriname and Guiana.
Remarks:
A large black blotch on opercle is diagnostic for this species. (Shimizu)