Common smooth-hound shark but in males, the pelvic fins are modified to form claspers. Like other smooth hounds, the common smooth hound will aggregate in large numbers, like a pack of dogs. This is why they are called hounds. Common smooth-hound The common smooth-hound ("Mustelus mustelus") is a houndshark of the family Triakidae. It is found in the eastern Atlantic Ocean from the British Isles to South Africa, and in the Mediterranean Sea, Madeira, and the Canary Islands at depths ranging from 5 m to 625 m (although they usually stay at depths between 5-50m). While they can grow to 200 cm,
Spotless smooth-hound longer than the upper one. The teeth are molar-like with low cusps. Both the dorsal fins have a curved trailing edge and the distance separating them occupies about 20% of the total length of the fish. The dorsal surface and flanks are grey or greyish-brown and the ventral surface is paler. The colour is uniform and there are no spots or bands of darker or lighter colour. The spotless smooth-hound is found in the temperate and tropical Pacific Ocean between 40°N and 11°N, off the coast of Vietnam, Japan, China and Taiwan, and possibly the Philippines. It occurs on the