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 Spotless smooth-hound The spotless smooth-hound ("Mustelus griseus") is a species of houndshark, in the family Triakidae, found on the continental shelves of the northwest Pacific, between latitudes 40° N and 11° N, from the surface to a depth of 300 m. It can grow to a length of up to . Male spotless smooth-hounds grow to a length of about with females growing to around . The head is short with a fairly long, bluntly pointed snout and the body is slender. The eyes are small and close together. The mouth is long and the lower lip groove is usually