Slim bamboo shark
| Slim bamboo shark | ||||||||||||
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Slim bamboo shark ( Chiloscyllium indicum ) |
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| Chiloscyllium indicum | ||||||||||||
| ( Gmelin , 1788) |
The slim bamboo shark ( Chiloscyllium indicum , originally Squalus indicus ) is a shark from the bamboo shark family (Hemiscylliidae).
features
The species reaches a maximum length of 65 centimeters, adult animals usually measure between 40 and 50 centimeters. The body and tail are very slender, which is where the species got its name from, with clearly defined ridges on the sides of the body. The shark has darker horizontal stripes, saddle marks and cross-dotted patterns on its back, and dark dots on its fins. In the young animals there is no clear limitation of the saddle spots.
The mouth lies clearly in front of the eyes, which are quite large for the species. 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.
distribution and habitat
He lives in the west of the Indian Ocean off India , Sri Lanka , Singapore , Thailand , Indonesia , Vietnam , Taiwan and Korea .
It lives on the continental shelf near the coast and may also be found in the fresh water of the lower reaches of the Perak in Malaysia .
Way of life
Comparatively little is known about the way of life of the slim bamboo shark. Like related species, it probably feeds primarily on invertebrates. The species is egg-laying ( oviparous ). The young sharks hatch with a length of about 13 centimeters and the males reach sexual maturity with a length of 39 to 42 centimeters, the females with about 43 centimeters.
Relationship to people
The small sharks are classified as harmless to humans due to their small size. Often caught by inshore fishermen in India, Sri Lanka and other countries where it is used for food, it can be affected by overfishing and major changes in its habitats near the coast, particularly coral reef destruction . Since little is known about this shark's way of life and reproduction, it is believed that it is sensitive to increased fishing pressure. The International Union for Conservation of Nature (IUCN) puts the species on the early warning list (“Near Threatened”) of endangered species.
supporting documents
- ↑ Chiloscyllium indicum in the IUCN Red List of Threatened Species 2010.2. Submitted by: Barratt, P., Cavanagh, RD & Kyne, PM (SSG Australia & Oceania Regional Workshop, March 2003), 2003. Retrieved July 1, 2010.
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 ( full PDF ), (species portrait )
- Leonard Compagno, Marc Dando, Sarah Fowler: Sharks of the World. Princeton Field Guides, Princeton University Press , Princeton and Oxford 2005, page 167, ISBN 978-0-691-12072-0
Web links
- Slim bamboo shark on Fishbase.org (English)