Graceful shark
Delicate shark ( Carcharhinus amblyrhynchoides )
The Graceful shark ( Carcharhinus amblyrhynchoides ) is a species of the genus Carcharhinus within the requiem sharks ( Carcharhinidae ). The range of this species extends from the Gulf of Aden and the coast of India to the islands of Southeast Asia to Vietnam, the Philippines and Indonesia as well as the north coast of Australia.
Appearance and characteristics
Graceful the shark is a medium having a maximum length from shark about 170 centimeters, wherein the average length is about 130 to 150 centimeters. He has a bronze tint back and a white belly. The tips of the pectoral fins, the two dorsal fins and the upper Schwanzlobus are black, the latter is also outlined in black. There is a clear white band may fade with age to the body sides. Confusion can with the blacktip reef shark (C. melanopterus ) and the gray reef shark (C. amblyrhynchos ) occur, with the former being significantly slimmer and the latter has a black border around the tail fins. Both species also have a gray and not bronze back staining.
He has an anal fin and two dorsal fins. The first dorsal fin begins at approximately the same height as the pectoral fins and is triangular in shape. The second dorsal fin is relatively well educated. A Interdorsalkamm does not exist. The pectoral fins are large and crescent- shaped with rounded or pointed ends fins. The muzzle is short and broad, and the eyes and the gills are relatively large. Like all species of the animals have five gill slits and have no spray hole. The gill slits are very long compared to other species of the genus. Named the Graceful shark is after the almost identically -shaped teeth in the lower and upper jaw ( isodon = " equal tooth "). These are slender and upright.
Way of life
The Graceful shark live in coastal areas over the continental shelf, but can be also found in offshore areas to depths of 50 meters. It feeds predatory, with mainly small bony fish, squid and other rare marine invertebrates belonging to his food spectrum. For humans it is not dangerous.
He is like other species of the genus are viviparous and forms a yolk sac placenta ( placental viviparous ). The female gives birth to an average of 3 young sharks to the world, they have a size of about 50 to 60 centimeters. Sexual maturity attain the sharks with a length of 110-115 centimeters.
Dissemination
The distribution area of slender shark is limited to the Indian Ocean and the Indo-Pacific. It is found from the Gulf of Aden and the coast of India to the islands of Southeast Asia to Vietnam, the Philippines and Indonesia as well as the north coast of Australia.
Endangering
The Graceful shark is classified in the IUCN Red List as a species with a low risk of danger ( " Low Risk " ), because it has quite a large area of distribution and is considered to be relatively reproductive. The pressure from the local fishery is low, although regularly sharks of this type are caught.