Mountain whitefish (Prosopium williamsoni) is a freshwater species recorded in the United States. It is found at depths of 5–20 m.
Scientific name: Prosopium williamsoni · Water: Freshwater
Size: up to 70 cm
The mountain whitefish is a benthopelagic salmonid that occurs in lakes and in fast, clear or silty streams, recorded from 5 to 20 m. It feeds mainly on benthic organisms such as aquatic insect larvae, mollusks, fishes and fish eggs, including its own, but it may also take plankton and surface insects. Maximum length is about 70 cm total length, commonly about 23.4 cm, and it can live 17 years. It is a minor commercial species and a gamefish, with a very high price category. Fishing vulnerability is high at 55 of 100 and resilience low. IUCN lists it as least concern.
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