Borneo shark
The Borneohai ( Carcharhinus borneensis ) is a species of the genus Carcharhinus within the requiem sharks ( Carcharhinidae ). The species occurs in the waters of Southeast Asia just south of China to Borneo and probably also to the Philippines and Java. After this shark was known by only five individuals long, caught in 1858-1937, a research team at the Universiti Malaysia Sabah succeeded in 2007, the rediscovery.
Appearance and characteristics
The Borneohai is a small and rather slender shark with a probable maximum length of about 100 centimeters. The longest scientifically recorded specimen was, however, only 70 inches long. He has a brown back and a white belly coloration. The fin tips of the first dorsal fin and the tail fin are dark, while the pectoral and ventral fins and the anal fins are edged with white.
He has an anal fin and two dorsal fins. The first dorsal fin is large and rounded, it starts over or slightly behind the rear base of the pectoral fins. The second dorsal fin is relatively low. A Interdorsalkamm does not exist. The pectoral fins are relatively small and crescent shaped. The snout is elongated and pointed to the corner of the mouth are strikingly large pore openings. Like all species of the animals have five gill slits and have no spray hole.
Way of life
The life of Borneohais is largely unknown. It is estimated that it occurs in coastal areas especially. Also, nutrition and reproduction have not been investigated, both done but probably as with other Carcharhinus species.
Dissemination
The Borneohai is in the marine areas of the Indo- Pacific Southeast Asia just south of China to Borneo and probably also spread to the Philippines and Java.
Endangering
The Borneohai is harmless to humans. He is listed in the IUCN Red List as endangered ( " Endangered "). Prior to 2007, the species was only occupied by five individuals, four of which in the area of Borneo and one derived from the coastal region of China. After since 1937, no specimen of this shark was caught more, Dr. Saleem Mustafa confirmed by the Universiti Malaysia Sabah in 2007 that the type still exists. Studies on fish markets in Borneo and collections in various countries of Southeast Asia had the IUCN led in 2000 to the assumption that this shark is threatened with extinction or already extinct.