sentences:  Reaching at least in length, this slim-bodied species closely resembles the Antilles catshark ("G. antillensis").It has a prominent crest of enlarged dermal denticles along the dorsal edge of the caudal fin, as well as a distinctive color pattern of dark oval blotches, outlined in white, along its back.The southern sawtail catshark is oviparous, with females producing reddish egg capsules.