Diagnostic Description
provided by Fishbase
Distinguished by the gill rakers that are longer than 20% of the interorbital width, 19 to 25 gill rakers (with modal counts of 22 or 23), and a pronounced hump behind the head in adults (Ref. 27547). Adipose fin well developed, often larger in males; axillary process present in pelvic fins (Ref. 27547). Dark brown to midnight blue above fading to silver on sides and wide beneath; no parr marks in young (Ref. 27547).
- Recorder
- Cristina V. Garilao
Life Cycle
provided by Fishbase
Upstream spawning migrations may be extensive but some populations seldom venture far upstream and still others may never go to sea at all (Ref. 593). Mature adults migrate upstream as early as June to spawn in October. It is assumed that the young hatch in late winter and spring, subsequently moving downstream, to return as mature adults 4 to 6 years later (Ref. 27547).
Migration
provided by Fishbase
Anadromous. Fish that ascend rivers to spawn, as salmon and hilsa do. Sub-division of diadromous. Migrations should be cyclical and predictable and cover more than 100 km.
Morphology
provided by Fishbase
Dorsal spines (total): 0; Dorsal soft rays (total): 11 - 13; Analspines: 0; Analsoft rays: 10 - 14; Vertebrae: 58 - 63
- Recorder
- Cristina V. Garilao
Trophic Strategy
provided by Fishbase
Feeds on worms, mollusks and crustaceans.
- Recorder
- Peter N. Yershov
Biology
provided by Fishbase
Inhabits coastal waters near shore (Ref. 5723), lower reaches of rivers with slow current, large lakes with tributaries, floodplain lakes, deltas and estuaries, brackish waters (Ref. 59043). Migrates up to more than 1,200 km inland for spawning (Ref. 5723). Overwinters near river mouths (Ref. 5723). There are non-migratory freshwater populations. Adults feed mostly on mollusks, crustaceans and chironomid larvae (Ref. 28219).
Importance
provided by Fishbase
fisheries: commercial; aquaculture: commercial
Humpback whitefish
provided by wikipedia EN
The humpback whitefish (Coregonus pidschian),[2] also referred to as the bottom whitefish,[2][3] the Arctic whitefish[4] or the pidschian,[4] is a species of freshwater whitefish with a northern distribution. It is one of the members in the broader common whitefish complex, or the Coregonus clupeaformis complex.[2] This fish lives in estuaries and brackish water near river mouths, in deltas and in slowly running rivers, in large lakes with tributaries, and floodplain lakes.[2][3] It can migrate long distances upriver for spawning.
The distribution of Coregonus pidschian is in the Arctic basin, ranging from Northern Norway and Finland across the Russian coast to Alaska and up to the Mackenzie River drainage in North-West Canada.[1] It is also found in the Okhotsk Sea basin.[5]
References
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^ a b Freyhof, J.; Kottelat, M. (2008). "Coregonus pidschian". IUCN Red List of Threatened Species. 2008: e.T5375A11125375. doi:10.2305/IUCN.UK.2008.RLTS.T5375A11125375.en. Retrieved 15 November 2021.
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^ a b c d Froese, Rainer; Pauly, Daniel (eds.) (2010). "Coregonus pidschian" in FishBase. February 2010 version.
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^ a b Freyhof, J.; Kottelat, M. (2008). "Coregonus pidschian". IUCN Red List of Threatened Species. 2008: e.T5375A11125375. doi:10.2305/IUCN.UK.2008.RLTS.T5375A11125375.en. Retrieved 18 November 2021.
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^ a b Kottelat, M. and Freyhof, J. 2007. Handbook of European Freshwater Fishes. Publications Kottelat, Cornol, Switzerland.
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^ Пыжьян Red Book of the Kamchatka Krai.
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Humpback whitefish: Brief Summary
provided by wikipedia EN
The humpback whitefish (Coregonus pidschian), also referred to as the bottom whitefish, the Arctic whitefish or the pidschian, is a species of freshwater whitefish with a northern distribution. It is one of the members in the broader common whitefish complex, or the Coregonus clupeaformis complex. This fish lives in estuaries and brackish water near river mouths, in deltas and in slowly running rivers, in large lakes with tributaries, and floodplain lakes. It can migrate long distances upriver for spawning.
The distribution of Coregonus pidschian is in the Arctic basin, ranging from Northern Norway and Finland across the Russian coast to Alaska and up to the Mackenzie River drainage in North-West Canada. It is also found in the Okhotsk Sea basin.
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- cc-by-sa-3.0
- copyright
- Wikipedia authors and editors
