Animalia > Chordata > Actinopterygii > Salmoniformes > Salmonidae > Oncorhynchus > Oncorhynchus kisutch

Oncorhynchus kisutch (coho salmon or silver salmon; Medium red salmon; Coho; Blueback; Coho salmon; Jack salmon; Silver salmon; Silverside; White salmon; Slivers; Sea trout; Salmon; Hoopid salmon; Hooknose; Grilse; Cohoe; Koho)

Synonyms: Oncorhynchus kisatch; Oncorhynchus kisutsh; Oncorhynchus milktschutsch; Salmo hisatch; Salmo hisutch; Salmo kisatch; Salmo kisutch; Salmo milktschutsch; Salmo tsuppitch
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Wikipedia Abstract

The coho salmon (Oncorhynchus kisutch) is a species of anadromous fish in the salmon family, one of the several species of Pacific salmon. Coho salmon are also known as silver salmon or "silvers". The scientific species name is based on the Russian common name kizhuch (кижуч).
View Wikipedia Record: Oncorhynchus kisutch


Adult Weight [3]  18.43 lbs (8.36 kg)
Female Maturity [2]  3 years
Male Maturity [3]  3 years
Adult Length [2]  3.5 feet (108 cm)
Brood Dispersal [2]  Hidden
Brood Egg Substrate [2]  Lithophils (rock-gravel)
Brood Guarder [2]  No
Diet [1]  Carnivore
Litter Size [2]  4,000
Maximum Longevity [2]  5 years
Migration [1]  Anadromous
Water Biome [1]  Rivers and Streams, Coastal

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Aleutian Islands Biosphere Reserve 2720489 Alaska, United States    
Arctic National Wildlife Refuge Ib 12402936 Alaska, United States
California Coast Ranges Biosphere Reserve 153447 California, United States  
Fathom Five National Marine Park II   Ontario, Canada
Golden Gate National Recreation Area V 26135 California, United States
Gulf Islands National Park National Park Reserve II 8785 British Columbia, Canada
Gwaii Haanas National Park Reserve II 366714 British Columbia, Canada
Indiana Dunes National Lakeshore II 8272 Indiana, United States
Kluane National Park and Reserve National Park Reserve II 5463436 Yukon, Canada
Lassen Volcanic National Park II 29388 California, United States
Mount Arrowsmith Biosphere Reserve 293047 British Columbia, Canada  
Niagara Escarpment Biosphere Reserve 470167 Ontario, Canada  
Olympic Biosphere Reserve II 922805 Washington, United States
Pacific Rim National Park Reserve II 137900 British Columbia, Canada
Point Reyes National Seashore II 27068 California, United States
Pukaskwa National Park II 459860 Ontario, Canada
Redwood National Park II 77867 California, United States
Saint Lawrence Islands National Park II   Ontario, Canada
Sikhote-Alinskiy Biosphere Reserve 978001 Russia  
Sleeping Bear Dunes National Lakeshore II 62563 Michigan, United States
Wrangell-St. Elias National Park and Preserve Ib 2476446 Alaska, United States


Prey / Diet

Alosa pseudoharengus (kyack)[4]
Coregonus hoyi (Bloater)[4]
Cottus cognatus (Anadyr sculpin)[4]
Myoxocephalus quadricornis (Alaska fourhorn sculpin)[4]
Neogobius melanostomus (Round goby)[4]
Osmerus mordax (Rainbow smelt)[4]
Perca flavescens (Yellow perch)[4]
Pleurogrammus monopterygius (Atka mackerel)[5]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Atheresthes stomias (Turbot)1
Bathyraja aleutica (Aleutian skate)1
Bathyraja maculata (White-blotched skate)1
Bathyraja parmifera (Flathead skate)1
Esox lucius (Jack)1
Eumetopias jubatus (Steller Sea Lion)1
Gadus macrocephalus (Pacific cod)1
Gavia pacifica (Pacific Loon)1
Hemilepidotus jordani (Yellow Irish lord)1
Hippoglossus stenolepis (Pacific halibut)1
Lamna ditropis (Salmon shark)1
Lota lota (Thin-tailed burbot)7
Megaptera novaeangliae (Humpback Whale)1
Micropterus dolomieu (Smallmouth bass)7
Oncorhynchus mykiss (redband trout)7
Oncorhynchus tshawytscha (chinook salmon or king salmon)7
Phalacrocorax auritus (Double-crested Cormorant)2
Phocoena phocoena (Harbor Porpoise)2
Salmo trutta (Brown trout)7
Salvelinus namaycush (American lake char)7
Sander vitreus (Walleye)7
Squalus acanthias (Common spiny)1
Sterna forsteri (Forster's Tern)1
Thymallus arcticus (Arctic grayling)1
Uria lomvia (Thick-billed Murre)1


Callorhinus ursinus (Northern Fur Seal)[6]
Cerorhinca monocerata (Rhinoceros Auklet)[7]
Lamna ditropis (Salmon shark)[8]
Orcinus orca (Killer Whale)[6]
Petromyzon marinus[4]


Parasitized by 
Acanthocephalus dirus[9]
Anisakis simplex[9]
Ascarophis sebastodis[9]
Brachyphallus crenatus[9]
Camallanus oxycephalus <Unverified Name>[9]
Capillaria salvelini <Unverified Name>[9]
Crepidostomum farionis[9]
Crepidostomum metoecus[9]
Cucullanus laevis <Unverified Name>[9]
Cyathocephalus truncatus <Unverified Name>[9]
Cystidicola farionis <Unverified Name>[9]
Cystidicoloides tenuissima <Unverified Name>[9]
Derogenes varicus[9]
Diphyllobothrium dendriticum[9]
Diphyllobothrium ditremum[9]
Diplostomum spathaceum[9]
Discocotyle sagittata[9]
Echinorhynchus gadi[9]
Echinorhynchus lateralis[9]
Echinorhynchus salmonis[9]
Eubothrium crassum[9]
Eubothrium salvelini[9]
Gyrodactylus salmonis[9]
Hemiurus levinseni[9]
Laminiscus strelkowi <Unverified Name>[9]
Lecithaster gibbosus[9]
Metabronema salvelini <Unverified Name>[9]
Nanophyetus salmincola <Unverified Name>[9]
Neoechinorhynchus rutili[9]
Neoechinorhynchus saginatus[9]
Neoechinorhynchus salmonis[9]
Neoechinorhynchus strigosus[9]
Neoechinorhynchus tumidus[9]
Nybelinia surmenicola[9]
Parahemiurus merus[9]
Petromyzon marinus (Eel sucker)[4]
Philonema agubernaculum <Unverified Name>[9]
Philonema oncorhynchi <Unverified Name>[9]
Phyllobothrium caudatum[9]
Pomphorhynchus bulbocolli[9]
Pronoprymna petrowi <Unverified Name>[9]
Proteocephalus parallacticus <Unverified Name>[9]
Rhabdochona canadensis <Unverified Name>[9]
Rhadinorhynchus trachuri[9]
Salvelinema salmonicola <Unverified Name>[9]
Salvelinema walkeri <Unverified Name>[9]
Schistocephalus solidus[9]
Spinitectus gracilis <Unverified Name>[9]
Sterliadochona ephemeridarum <Unverified Name>[9]
Tetraonchus alaskensis[9]
Triaenophorus nodulosus[9]
Tubulovesicula lindbergi[9]

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Chicago Zoological Park
John G. Shedd Aquarium
Oregon Zoo

Range Map

Alaska (USA); America, North - Inland waters; America, South - Inland waters; Amur; Arctic Ocean; Argentina; Asia - Inland waters; Atlantic Ocean; Atlantic, Northeast; Beaufort Sea; Belgium; California Current; Canada; Caspian Sea; Chile; Chukchi Sea; Cyprus; Estonia; Europe - Inland waters; France; Fraser; Germany, Fed. Rep.; Great Lakes; Greece; Gulf of Alaska; Iran (Islamic Rep. of); Israel; Italy; Japan; Kerguelen Islands; Korea, Dem. People's Rep; Korea, Republic of; Kuril Islands; Kuroshio Current; Latvia; Mexico; Nearctic; Neotropical; Netherlands; North Pacific: distributed from the Anadyr River in Russia south towards Hokkaido, Japan, and from Point Hope in Alaska southwards to Chamalu Bay in Baja California, Mexico.; Oyashio Current; Pacific Ocean; Pacific, Eastern Central; Pacific, Northeast; Pacific, Northwest; Palearctic; Russian Federation; Sakhalin Island; Sea of Japan; Sea of Okhotsk; Sweden; USA (contiguous states); United Kingdom;



Attributes / relations provided by 1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at 2Frimpong, E.A., and P. L. Angermeier. 2009. FishTraits: a database of ecological and life-history traits of freshwater fishes of the United States. Fisheries 34:487-495. 3de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774 4NOAA, Great Lakes Environmental Research Laboratory 5The trophic role of Atka mackerel, Pleurogrammus monopterygius, in the Aleutian Islands area, Mei-Sun Yang, Fish. Bull. 97(4):1047-1057 (1999) 6Food Web Relationships of Northern Puget Sound and the Strait of Juan de Fuca : a Synthesis of the Available Knowledge, Charles A. Simenstad, Bruce S. Miller, Carl F. Nyblade, Kathleen Thornburgh, and Lewis J. Bledsoe, EPA-600 7-29-259 September 1979 7Diving depths, diet, and underwater foraging of Rhinoceros Auklets in British Columbia, Alan E. Burger, Rory P. Wilson, Don Garnier and Marie-Pierre T. Wilson, Canadian Journal of Zoology Vol. 71: 2528-2540 (1993) 8Predation by Salmon Sharks (Lamna ditropis) on Pacific Salmon (Oncorhynchus spp.) in the North Pacific Ocean, Kazuya Nagasawa, NPAFC Bulletin No. 1 pp. 419-433 (1998) 9Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
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