Broad whitefish (Coregonus nasus)

Scientific name: Coregonus nasus Pallas, 1776

Broad whitefish (Coregonus nasus)

The Broad whitefish (Coregonus nasus) is a freshwater fish of the family Salmonidae. Native range: Arctic, from Volonga and Pechora to Alaska.

Biology

Nerito-pelagic. Lowland river and lakes but most frequently in streams. Lacustrine and estuarine anadromous forms exist. Alevins and juveniles feed on zooplankton, adults on benthos, mainly chironomid larvae and molluscs. Males reproduce for the first time in 4-8 years, females at 5-9. Adults start upstream migration in late July - August and reach spawning sites by October - November and spawn in stretches with swift current and sand-pebble bottom, often under ice. Spawning lasts 5-7 days and fish leave spawning site soon after, migrating downstream to overwinter in deeper places of lower stretches of rivers together with older juveniles. In spring, alevins drift from spawning sites downstream with flood-water and forage in floodplain lakes and oxbows where they remain until end of summer bef

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Coregonus nasus
Family
Salmonidae (Salmonids)
Order
Salmoniformes (Salmons)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
61.0
Common length
46.0
Environment
Marine; freshwater; brackish; demersal; anadromous
Climate
Polar
Distribution
Arctic: from Volonga and Pechora to Alaska.
Conservation status (IUCN)
Least Concern (LC)
Threat to humans
Harmless
Uses
Fisheries: commercial; gamefish: yes
Resilience
Low, minimum population doubling time 4.5 - 14 years (K=0.10-0.30; tm=7; tmax=15; Fec=10,000)

Sources

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

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