Helicophagus leptorhynchus
| Helicophagus leptorhynchus | ||||||||||||
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| Scientific name | ||||||||||||
| Helicophagus leptorhynchus | ||||||||||||
| Ng & Kottelat , 2000 |
Helicophagus leptorhynchus is a species of fish belonging to the genus Helicophagus within the shark catfish family. It occurs in the river systems of the Mae Nam Chao Phraya in Thailand and the Mekong in Cambodia , Laos and Vietnam .
features
Helicophagus leptorhynchus has an elongated, laterally flattened body with a total length of up to 47 cm. The snout is elongated, conical, the mouth opening narrow. The dorsal fin has one hard and six to seven soft rays, the anal fin 35 to 42 soft rays. The gill trap has 9 to 12 rays on the first arch. On the intermaxillary bone, the teeth sit in two square groups. From the very similar species, Helicophagus waandersii , Helicophagus leptorhynchus can be distinguished by the longer anal fin, the longer head with larger eye and the shorter caudal fin. The body is silvery to gray or pale pink with reddish fins with a dark yellow base.
Way of life
The species colonizes the rivers and does not migrate into the floodplains even in the rainy season. At the beginning of the rainy season the animals migrate upstream, at the end of the rainy season they migrate in the opposite direction. They feed mainly on mussels .
swell
- Helicophagus leptorhynchus on Fishbase.org (English)
- HH Ng, M. Kottelat: Helicophagus leptorhynchus, a new species of molluscivorous catfish from Indochina (Teleostei: Pangasiidae) . In: The Raffles Bulletin of Zoology . tape 48 , no. 1 , 2000, pp. 55–58 (English, edu.sg [PDF]).
Web link
- Helicophagus leptorhynchus inthe IUCN Red List of Threatened Species 2013.1. Listed by: Vidthayanon, C., 2011. Retrieved November 15, 2013.