Elongate, relatively robust body; snout short, bluntly rounded; mouth convex; eyes horizontal ovals, with ventral nictitating membranes; widely separated anterior nasal flaps do not meet mouth; teeth semi-molar-like, with straight erect points and side points absent or poorly developed; 5 gill slits, last 2 over pectoral fin base; pectorals narrowly curved with pointed tips in adults; 2 large dorsal fins, second slightly smaller than first; first dorsal fin with vertical rear edge, centered midway between pectoral and pelvic bases; anal fin smaller than and with origin under middle of second dorsal; tail strongly asymmetrical, lower lobe with small point; fins with angular points.