Valaam whitefish (Coregonus widegreni)

Scientific name: Coregonus widegreni Malmgren, 1863

Valaam whitefish (Coregonus widegreni)

The Valaam whitefish (Coregonus widegreni) is a freshwater fish of the family Salmonidae.

Biology

Recorded from coastal waters at sea. Lacustrine, at depths greater than 30 m, in Lake Ladoga commonly at 50-150 m. Specimens measuring 36-40 cm are more than 5 years old. Spawns for the first time at 4-6 years. Spawns from the end of November to 20 December. Oviparous. Eggs are buried in unguarded nests. Feeds on benthic invertebrates, especially gammarids, molluscs and insect larvae.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Coregonus widegreni
Family
Salmonidae (Salmonids)
Order
Salmoniformes (Salmons)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
55.0
Depth range
30–150 m (98–492 ft)
Environment
Freshwater; demersal; depth range 30 - 150 m
Climate
Temperate
Distribution
Europe: Baltic: Bothnian Gulf, Gotland (missing along Swedish coast southward of Stockholm); southern Baltic: from Germany to Gulf of Finland; several landlocked populations in Sweden (Lakes V?nern, V?ttern, Locknesj?n, Storvindeln, Storlaisan, Skalka-Parkijaur, Arjeplog) and Russia (Neva drainage, Lakes Ladoga and Onega).
Conservation status (IUCN)
Data deficient (DD)
Threat to humans
Harmless
Uses
Fisheries:
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.14-0.91; tm=3-5; tmax=19)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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