(Family):Dorsal fin with a deep notch or completely divided in two. Caudal fin not furcated. Anal fin with 1〜2 spines. Head mostly covered with scales. Lateral line extending to hind margin of caudal fin. Lower jaw with a single or more barbels in some species. (Genus and Species):Lower jaw without barbel. Tips of lower jaw projecting beyond upper jaw. Teeth on jaws canine-like, a pair of anteriormost teeth on upper jaw longest. Tips of teeth not arrow-headed. Dorsal fin with a wide gap between spinous and soft portions, its width equal to basal length of spinous portion.
Distribution:
From Panama to southern Brazil.
Remarks:
This is the only western Atlantic species in this genus.