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Coregonus nasus  (Pallas, 1776)

Broad whitefish
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| Native range | All suitable habitat | PointMap | Year 2100 |
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Coregonus nasus   AquaMaps   Data sources: GBIF OBIS
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Image of Coregonus nasus (Broad whitefish)
Coregonus nasus
Picture by Kline, T.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Salmoniformes (Salmons) > Salmonidae (Salmonids) > Coregoninae
Etymology: Coregonus: Greek, kore = pupils of the eye + Greek, gonia = angle (Ref. 45335);  nasus: nasus refering to shape of nose (Ref. 1998).

Environment / Climate / Range Ecology

Freshwater; brackish; demersal; anadromous (Ref. 51243).   Polar; 73°N - 59°N, 46°E - 102°W

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 61.0 cm SL male/unsexed; (Ref. 59043); common length : 46.0 cm TL male/unsexed; (Ref. 1998); max. published weight: 16.0 kg (Ref. 1998); max. reported age: 15 years (Ref. 59043)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 10-13; Anal spines: 0; Anal soft rays: 11 - 14; Vertebrae: 60 - 65. Distinguished by its short gill rakers, which are less than one-fifth as long as the interorbital width, and the rounded to flat profile of the head (Ref. 27547). Adipose fin fairly large; axillary process present in the pelvic fins (Ref. 27547). Olive-brown to nearly black on back; sides silvery, often with a gray cast; belly white to yellowish; fins usually rather gray in adults, pale in young (Ref. 27547).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Arctic: from Volonga and Pechora to Alaska.

Biology     Glossary (e.g. epibenthic)

Nerito-pelagic (Ref. 58426). Lowland river and lakes (Ref. 59043) but most frequently in streams (Ref. 5723). Lacustrine and estuarine anadromous forms exist (Ref. 593). Alevins and juveniles feed on zooplankton, adults on benthos, mainly chironomid larvae and molluscs (Ref. 1998, 59043). 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 before moving to river or reaching maturity (if lakes are large enough and do not dry out). Widely used for aquaculture in eastern Europe (Ref. 59043). Flesh is highly esteemed (Ref. 1998). Sold fresh, dried, or smoked (Ref. 1998).

Main reference Upload your references | References | Coordinator | Collaborators

Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. Common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Pub. (20):183 p.

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: commercial; gamefish: yes
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00741 (0.00464 - 0.01185), b=3.17 (3.03 - 3.31), based on LWR estimates for species & Genus-BS (Ref. 93245).
Trophic Level (Ref. 69278):  3.3   ±0.44 se; Based on food items.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (K=0.10-0.30; tm=7; tmax=15; Fec=10,000).
Vulnerability (Ref. 59153):  High to very high vulnerability (65 of 100) .
Price category (Ref. 80766):   Very high.