Genus: Zameus, Velvet Dogfish Shark, Velvet Dogfishes Sharks
mouth short, narrow, transverse
VELVET DOGFISHES SHARKS
Body cylindrical, fusiform; head low, flat; eyes on side of head, without nictitating membranes; spiracles large, just behind eyes; snout relatively long, without barbels; mouth short, nearly transverse; top teeth narrow, needle-like, with a single point, non-overlapping; bottom teeth large, blade-like, overlapping, without cusps, erect; gill slits 5, all before pectoral fin; 2 dorsal fins, each with a very small, grooved spine; 1st dorsal smaller than 2nd dorsal; origin of 1st dorsal behind pectoral fins; space between dorsal fins less than head length; no anal fin; pelvic fins larger than 2nd dorsal; tail fin strongly asymmetrical, upper lobe with deep notch under tip, lower lobe strong; no keels or pits before base of tail fin; skin denticles close-set, not enlarged; body and fins uniform dark brown to black.
A cosmopolitan genus with two species; one in the GC