Helicophagus waandersii
| Helicophagus waandersii | ||||||||||||
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| Scientific name | ||||||||||||
| Helicophagus waandersii | ||||||||||||
| Bleeker , 1858 |
Helicophagus waandersii is a species of fish belonging to the genus Helicophagus within the shark catfish family. The species occurs in Sumatra , as well as in the Mae Nam Chao Phraya and the Mekong in Thailand , Cambodia , Laos and Vietnam .
features
Helicophagus waandersii has an elongated, laterally flattened physique. The species reaches a length of about 70 cm. The hull is pearl-colored with a black top and front. The underside of the head and the belly are white. The fins are reddish. The top and edge of the caudal fin are dark. There is a whitish spot on the top of the head. The head is conical, the mouth is below. The barbels on the upper jaw almost reach the dorsal fin, while those on the lower jaw are slightly shorter. The dorsal fin has two hard and six to seven soft rays, the pectoral fins have one hard and 10 to 11 soft rays, the pelvic fins have six soft rays and the anal fin has 38 to 42 soft rays. On the intermaxillary bone, the teeth sit in two square groups.
The species feeds on molluscs , mainly small-shelled clams.
swell
- Tyson R. Roberts, Chavalit Vidthayanon: Systematic revision of the Asian catfish family Pangasiidae, with biological observations and descriptions of three new species . In: Proceedings of the Academy of Natural Sciences of Philadelphia , Vol. 143 (1991), pp. 97-144 ISSN 0097-3157 .
- Max Wilhelm Carl Weber , Lieven Ferdinand de Beaufort: The fishes of the Indo-Australian Archipelago . Brill, Leiden 1911.
Individual evidence
- ↑ now Academy of Natural Sciences of Drexel University.
Web links
- Helicophagus waandersii on Fishbase.org (English)
- Helicophagus waandersii inthe IUCN Red List of Threatened Species 2013.2. Listed by: Vidthayanon, C., 2011. Retrieved January 10, 2014.