FB-2685 http://www.fishbase.org/summary/SpeciesSummary.php?id=2685 Animalia Chordata Teleostei Salmoniformes Salmonidae Prosopium Prosopium williamsoni (Girard, 1856) Rocky Mountain helt Grayling Ménomini des montagnes Mountain whitefish Rocky Mountain whitefish Williamson's whitefish Kaljumäestiku rullsiig Vuoripyörösiika 威氏白鮭 威氏白鲑 山地柱白鮭 山地柱白鲑 Coregonus oregonius Jordan & Snyder, 1909 Coregonus williamsoni Girard, 1856 Prosopium oregonium (Jordan & Snyder, 1909) 1991-05-01 2008-01-29 Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott0 A list of common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Publ. (12)1-174. (Ref. 276) Scott, W.B. and E.J. Crossman0 Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184: xi+1-966. (Ref. 1998) McClanes, A.J. (ed.)0 Field guide to freshwater fishes of North America. Holt, Rinehart and Winston, New York. 212 p. 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Retrieved from http://www.fao.org/fishery/collection/asfis/en (accessed 08/06/2017). (Ref. 115257) Saks, L.0 Estonian Common Names, Rank 2. Personal communication (Ref. 116654) FAO-FIES0 Aquatic Sciences and Fisheries Information System (ASFIS) species list. Retrieved from htttps://www.fao.org/fishery/collection/asfis/en [accessed May, 2018] (Ref. 118272) GoY, Government of Yukon0 Yukon freshwater fishes. Wildlife Viewing Program, Environment Yukon. Whitehorse (YU, Canada): Government of Yukon, 32 p. (Ref. 119011) Tonn, W., H. Swanson, C. Paszkowski, J. Hanisch and L. Chavarie0 Northern North America. p. 85-100. In J.F. Craig (ed.). Freshwater Fisheries Ecology. John Wiley & Sons Ltd. 899p. (Ref. 119194) Dean, E.M., A.R. Cooper, L. Wang, W. Daniel, S. David, C. Ernzen, K.B. Gido, E Hale, T.J. Haxton, W. Kelso, N. Leonard, C. Lido, J. Margraf, M. Porter, C. Pennock, D. Propst, J. Ross, M.D. Staudinger, G. Whelan and D.M. Infante0 The North American Freshwater Migratory Fish Database (NAFMFD): Characterizing the migratory life histories of freshwater fishes of Canada, the United States of Mexico. J. Biogeography 49:1193-1203. (Ref. 126106) Beolens, B., M. Grayson and M. Watkins0 Eponym dictionary of Fishes. Dunbeath, Caithness (Scotland, UK): Whittles Publishing Limited, 1300 p. (Ref. 128868) IUCN0 The IUCN Red List of Threatened Species. 1964 - onwards. https://www.iucnredlist.org/ (Ref. 130435) Meyer, K.A. and D.J. Schill0 The Gill-Oxygen Limitation Theory and size at maturity / maximum size relationships for salmonid populations occupying flowing waters. J. Fish Biol. 98(1):44-49. (Ref. 132188) Price, S.A., S.T. Friedman, K.A. Corn, O. Larouche, K. Brockelsby, A.J. Lee, M. Nagaraj, N.G. Bertrand, M. Danao, M.C. Coyne, J.R. Estrada, R. Friedman, E. Hoeft, M. Iwan, D. Gross, J.H. Kao, B. Landry, M.J. Linares, C. McGlinn and …0 FishShapes v1: Functionally relevant measurements of teleost shape and size on three dimensions. Ecology 103(e3829):1-2. (Ref. 137577) FB-GeneralDescr-2685 http://purl.org/dc/dcmitype/Text text/html Rainer Froese 1991-05-01 00:00:00 2025-12-02 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=2685 Adults occur in lakes and fast, clear or silty streams. They feed mainly on benthic organisms such as aquatic insect larvae, mollusks, fishes, and fish eggs (including their own) but may feed on plankton and surface insects when the need arises (Ref. 1998). Page, L.M. and B.M. Burr 1991 A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723) FB-DiagnosticDescr-2685 http://purl.org/dc/dcmitype/Text text/html Rodolfo B. Reyes 1996-10-06 00:00:00 2012-11-30 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2685 http://rs.tdwg.org/ontology/voc/SPMInfoItems#LifeCycle Body slender, elongate, nearly cylindrical in cross section but variable, more compressed laterally than round whitefish. Head short; eye moderate, its diameter less than snout length; snout more or less pointed, compressed laterally, pinched, rounded in lateral view, a single flap of skin present between nostrils. Mouth small, ventral in position, overhung by snout; maxillaries extending posteriorly almost to anterior margin of eye in adults. Teeth small, restricted to a small patch on tongue and on gill rakers in adults, although small teeth may be present on the premaxillaries in young, but absent from jaws, vomer, palatines and pre maxillae in adults. Overall coloration silvery, but light or dark brown or olive on back, becoming silvery in sides and white below. Scales, specially on back, may have pigmented borders. dorsal fin often dusky, pelvic and pectoral fins in adults with amber tint. Scott, W.B. and E.J. Crossman 1973 Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184: xi+1-966. (Ref. 1998) FB-Morphology-2685 http://purl.org/dc/dcmitype/Text text/html Rodolfo B. Reyes 1996-10-06 00:00:00 2012-11-30 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2685 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Size Dorsal spines (total): 0; Dorsal soft rays (total): 11 - 15; Analspines: 0; Analsoft rays: 10 - 13; Vertebrae: 53 - 61 Scott, W.B. and E.J. Crossman 1973 Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184: xi+1-966. (Ref. 1998) FB-Distribution-2685 http://purl.org/dc/dcmitype/Text text/html Rainer Froese 1991-05-02 00:00:00 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2685 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Threats North America: Mackenzie River drainage in Northwest Territory, Canada south through western Canada and northwestern USA in the Pacific, Hudson Bay and upper Missouri River basins to Truckee River drainage in Nevada and Sevier River drainage in Utah, USA. Page, L.M. and B.M. Burr 1991 A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723) FB-Uses-2685 http://purl.org/dc/dcmitype/Text text/html Rainer Froese 1991-05-01 00:00:00 2025-12-02 00:00:00 Importance http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2685 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat fisheries: minor commercial; gamefish: yes Scott, W.B. and E.J. Crossman 1973 Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184: xi+1-966. (Ref. 1998) International Game Fish Association 1991 World record game fishes. International Game Fish Association, Florida, USA. (Ref. 4699) FB-Migration-2685 http://purl.org/dc/dcmitype/Text text/html Rainer Froese 1991-05-01 00:00:00 2025-12-02 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2685 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Distribution Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km. Dean, E.M., A.R. Cooper, L. Wang, W. Daniel, S. David, C. Ernzen, K.B. Gido, E Hale, T.J. Haxton, W. Kelso, N. Leonard, C. Lido, J. Margraf, M. Porter, C. Pennock, D. Propst, J. Ross, M.D. Staudinger, G. Whelan and D.M. Infante 2022 The North American Freshwater Migratory Fish Database (NAFMFD): Characterizing the migratory life histories of freshwater fishes of Canada, the United States of Mexico. J. Biogeography 49:1193-1203. (Ref. 126106) FB-TrophicStrategy-2685 http://purl.org/dc/dcmitype/Text text/html Pascualita Sa-a 1997-04-08 00:00:00 2007-07-31 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ williamsoni Occurs in lakes and fast, clear or silty streams. Feeds mainly on benthic organisms such as aquatic insect larvae, mollusks, fishes, and fish eggs (including their own) but may feed on plankton and surface insects when the need arises (Ref. 1998). Scott, W.B. and E.J. Crossman 1973 Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184: xi+1-966. (Ref. 1998) FB-Size-2685 http://purl.org/dc/dcmitype/Text text/html Rainer Froese 1991-05-01 00:00:00 2025-12-02 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2685 http://rs.tdwg.org/ontology/voc/SPMInfoItems#LifeCycle 70.0 cm TL (male/unsexed; (Ref. 40637)); max. published weight: 2,920 g (Ref. 40637); max. reported age: 17 years (Ref. 72462) IGFA 2001 Database of IGFA angling records until 2001. IGFA, Fort Lauderdale, USA. (Ref. 40637) IGFA 2001 Database of IGFA angling records until 2001. IGFA, Fort Lauderdale, USA. (Ref. 40637) Altman, P.L. and D.S. Dittmer 1962 Growth, including reproduction and morphological development. Federation of American Societies for Experimental Biology. (Ref. 72462) FB-Threats-2 http://purl.org/dc/dcmitype/Text text/html Belen Acosta 1990-10-18 00:00:00 2024-03-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2 http://rs.tdwg.org/ontology/voc/SPMInfoItems#TrophicStrategy Least Concern (LC) , IUCN Grouper and Wrasse Specialist Group IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006. FB-Habitat-2685 http://purl.org/dc/dcmitype/Text text/html Rainer Froese 1991-05-01 00:00:00 2025-12-02 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2685 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Size benthopelagic; potamodromous (Ref. 126106); freshwater; depth range 5 - 20 m (Ref. 1998), usually 5 - 6 m (Ref. 1998) Dean, E.M., A.R. Cooper, L. Wang, W. Daniel, S. David, C. Ernzen, K.B. Gido, E Hale, T.J. Haxton, W. Kelso, N. Leonard, C. Lido, J. Margraf, M. Porter, C. Pennock, D. Propst, J. Ross, M.D. Staudinger, G. Whelan and D.M. Infante 2022 The North American Freshwater Migratory Fish Database (NAFMFD): Characterizing the migratory life histories of freshwater fishes of Canada, the United States of Mexico. J. Biogeography 49:1193-1203. (Ref. 126106) Scott, W.B. and E.J. Crossman 1973 Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184: xi+1-966. (Ref. 1998) Scott, W.B. and E.J. Crossman 1973 Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184: xi+1-966. (Ref. 1998)