Sevan trout (Salmo ischchan) fish species and information / pictures of Sevan trout - Salmo ischchan

Sevan trout (Salmo ischchan) fish species information

Scientific Name
Salmo ischchan

Common Name
Sevan trout

Biology
The adults spawn in the lake proper at a depth range of 0.5 to 3 m, over fine gravel. Two spawning stocks are known: one spawns in the northwestern corner of the lake from the beginning of November till the end of December; the other spawns at the southeastern corner, from the middle or the end of January till the end of March. This fish approaches the coast twice a year: from April till July and from October till December. In mid winter and at the end of summer, it leaves the coasts to stay at greater depth. Adults feed exclusively on sand hoppers (Amphipoda) (Ref. 593).

Classification

Classified By
Kessler, 1877
Class
Ray-finned fishes (Actinopterygii)
Order
Salmons (Salmoniformes)
Family
Salmonids (Salmonidae)

Distribution

Region
Former USSR
Distribution
Former USSR: Armenia, Lake Sevan.
Range
41°N - 40°N, 44°E - 46°E

Environment

Climate
Temperate
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
demersal
Environment
Freshwater; demersal
Trophic Level
3.285 s.e. 0.53 Based on food items.
Occurs in Marine / Salt water
False
Occurs in Brackish water
False
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
104 cm
Common Length
33.0 cm
Phylogenetic Diversity Index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: commercial; gamefish: yes
Vulnerability
High vulnerability (65 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=3-4)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated