| Ecological Descriptors
||Cru, Ech, Mol, Pisc Noct
Sharks with small eyes, set behind the termination of the small mouth. Upper lip with two barbels. Two dorsal fins, of nearly equal size, are set far back. Tail fin with a large and extended upper tail lobe and a small to indistinct lower lobe. The colour varies from gray to yellow-brown
Found on continental and insular shelves. Solitary and sluggish fish, often encountered lying on the bottom.. Nocturnal, feeding on bottom invertebrates such as spiny lobsters, shrimps, crabs, sea urchins, squids, octopi, snails and bivalves, and fishes like mullets, puffers and stingrays. Common over shallow sand flats, in channels, and around coral reefs; young may be found among prop roots of red mangroves
Ovoviviparous, with 21 to 28 young in a litter, size at birth: 27 to 30 cm, gestation time: 5 to 6 month, breeding x2 annually . Development of young in the uterus being sustained by a large supply of yolk. Females give birth in late spring and summer in waters off Florida. During courtship, a pair sometimes a triplet of adults engaged in synchronized parallel swimming. Age at maturity: Female: 15 to 20 years; Male: 10 to 15 years. Maximum age 25 years.