Salmo ezenami
| Salmo ezenami | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Salmoniformes |
| Family: | Salmonidae |
| Genus: | Salmo |
| Species: | S. ezenami |
| Binomial name | |
| Salmo ezenami L. S. Berg, 1948 | |
Salmo ezenami is a critically endangered freshwater salmonid fish, endemic to Lake Kezenoi-Am (Lake Eizenam) in Northern Caucasus.[1]
The only native occurrence, in Lake Kezenoi-Am in Chechnya at the border of Dagestan, is in a cold alpine lake (area 2.4 km², maximum depth 74 m, 1870 m altitude). In addition, the species has been introduced to another lake in Dagestan, Lake Mochokh, probably successfully.[2]
Salmo ezenami used to be the only fish species in Lake Kezenoi-Am. However, two other species, the European chub and Gobio holurus have been introduced, and present a threat by eating the fry of Salmo.[2]
Salmo ezenami spawns in the lake, close to underwater springs. Adult fish also probably migrate to tributaries. There are separate small-sized (adults 160–260 mm) and large-sized forms (380–1130 mm). Young prey on gammarids and chironomids; adults also eat molluscs and fishes, after the introduction of nonnative species.[2]
References
- ↑ "Salmo ezenami". Fishbase. Retrieved 2009-03-31.
- 1 2 3 Freyhof, J. & Kottelat, M. 2008. Salmo ezenami. In: IUCN Red List of Threatened Species. Version 2010.1. Downloaded on 5 April 2010.