Pondicherry shark
Pondicherryhai ( Carcharhinus hemiodon )
The Pondicherryhai ( Carcharhinus hemiodon ) is a species of the genus Carcharhinus within the requiem sharks ( Carcharhinidae ). The range of this species extends from the coasts of India and Oman to the islands of Southeast Asia to Vietnam, Indonesia and New Guinea. Since 1979, however, no more sharks were detected.
Appearance and characteristics
The Pondicherryhai is a medium sized shark with a maximum length of about 150 to 200 centimeters. He has a gray back and a white belly coloration. The tips of the pectoral fins, the second dorsal fin and the two parts of the tail are black. There is a white band on the sides of the body.
He has an anal fin and two dorsal fins. The first dorsal fin is tall and falcate, it starts over or slightly behind the rear attachment point of the pectoral fins. The second dorsal fin is relatively large and well formed with about 2.7 % of the body length, it begins approximately at the same height as the anal fin. A Interdorsalkamm is available. The pectoral fins are large and sickle-shaped. The snout is pointed and elongated. The eyes are large and round and have a diameter corresponding to about 2-3% of body length. Like all species of the animals have five gill slits and have no spray hole.
Way of life
The Pondicherryhai probably lives only in coastal areas over the continental shelf and in the area of islands. It feeds predatory, which probably mainly bony fish belong to his food spectrum.
Over the life of this kind are very few data are available. He's probably like other species of the genus are viviparous and forms a yolk sac placenta ( placental viviparous ).
Dissemination
The Pondicherryhai has a potential distribution area of the coasts of India and Oman to the islands of Southeast Asia to Vietnam, Indonesia and New Guinea.
System
Together with some other types of Pondicherryhai until a few years ago in a separate genus of the night sharks ( Hypo prion ) has been set. These species belonged to the Atlantic Nachthai (C. signatus ) and the Hartnasenhai (C. macloti ), for the smooth tooth blacktip (C. leiodon ) was a membership discussed due to the tooth shape.
Endangering
The Pondicherryhai is harmless to humans. He is in the Red List of IUCN threatened with extinction as ( " Critically Endangered " ) reported, as it is known today only from 20 individuals, which are kept in museums and were caught in far-flung places. The conclusive scientific evidence dating back to 1979 and has since not been sighted or found in market samples. Most evidence comes from the time before 1900, and its range is an area of intensive fishing.