Arab bamboo shark
| Arab bamboo shark | ||||||||||||
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Arab bamboo shark |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Chiloscyllium arabic | ||||||||||||
| Gubanov , 1980 |
The Arabian bamboo shark ( Chiloscyllium arabicum , also Chiloscyllium confusum ) is a shark from the family of bamboo sharks (Hemiscylliidae).
features
The species reaches a maximum length of 70 centimeters, adult animals usually measure between 50 and 60 centimeters. The body is slender and becomes continuously narrower towards the tail, which is thicker compared to that of other species in the genus. He has clearly pronounced ridges on the upper body sides. It is not spotted, only young animals occasionally have light spots on their fins.
The mouth is, typical of the species, clearly in front of the eyes. Both the dorsal fins and the anal fin start very far back on the body. The first dorsal fin starts above the pelvic fins or directly behind them and the beginning of the anal fin is far behind the end of the second dorsal fin. The second dorsal fin usually has a longer attachment than the first, and the rear edges of both are almost completely straight.
distribution and habitat
The Arabian bamboo shark lives in the west of the Indian Ocean off India and Pakistan ( Arabian Sea ) and in the Persian Gulf between Iran and the Arabian Peninsula .
It lives on the continental shelf near the coast, mostly in coral reefs , lagoons, rocky coasts or mangroves at depths between 3 and 100 m.
Way of life
It feeds on molluscs and crustaceans , as well as snake eels . It is oviparous and lays up to four egg sacs, from which the young hatch after 70 to 80 days. The young sharks hatch with a length of about 10 centimeters and the animals reach sexual maturity with a length of 45 to 54 centimeters.
Relationship to people
The small sharks are classified as harmless to humans due to their small size. It is used as food by coastal fishermen in India and Pakistan and is caught as by-catch in other parts of its range .
The International Union for Conservation of Nature (IUCN) puts the species on the early warning list ("Near Threatened") of endangered species, but does not rule out a re-evaluation as a sensitive species ("Vulnerable") in the future. It is particularly affected by major changes in its habitats near the coast, particularly changes in the coastline in the Persian Gulf and the destruction of coral reefs . For the reasons mentioned, a population decline of more than 30% has been recorded for this species over the last three generations. The threat from fishing and habitat degradation is likely to continue in the future, increasing in intensity and scope.
supporting documents
- ↑ a b Chiloscyllium arabic in the endangered Red List species the IUCN 2017. Posted by: A. Moore, 2017. Accessed July 13, 2020th
literature
- LJV Compagno : Sharks of the world. An annotated and illustrated catalog of shark species known to date. Volume 2. Bullhead, mackerel and carpet sharks (Heterodontiformes, Lamniformes and Orectolobiformes). FAO Species Catalog for Fishery Purposes. No. 1, Vol. 2. FAO Rome 2001 ( complete PDF , species portrait )
- Leonard Compagno, Marc Dando, Sarah Fowler: Sharks of the World. Princeton Field Guides, Princeton University Press , Princeton and Oxford 2005, page 165, ISBN 978-0-691-12072-0
Web links
- Arabian bamboo shark on Fishbase.org (English)