A slender, fusiform shark; snout long and pointed (length 1.2-1.8 in distance between nostrils); eyes circular and large; nostrils with narrow-based pointed flap; top lip fold short; top front teeth with narrow, oblique, notched, serrated points, lower front teeth with narrow, straight points; no ridge between dorsal fins; first dorsal fin low with bluntly pointed tip, origin over rear inner margin of pectoral fins; origin of second dorsal fin over or slightly behind middle of anal fin; pectoral fins small, slightly curved with narrowly rounded to pointed tips.
Generally grey on back and sides, white on lower parts; tips of pectoral, dorsal, and caudal fins may be dusky or blackish, but are not prominently marked.
Grows to < 150 cm.
Habitat: an inshore shark over mud bottoms, often into shallow estuaries.
Depth: 5-35 m.
Western Atlantic and eastern Pacific; southern Baja and the Gulf of California to Peru.