Whitefish, mountain (Prosopium williamsoni)
(Girard, 1856); SALMONIDAE FAMILY; also called Rocky Mountain whitefish, Williamson's whitefish, grayling
Endemic to the lakes and streams of the northwestern U.S. and southwestern Canada, from the Lahontan basin in Nevada north to the southern border of the Yukon Territory. It occurs inland into Alberta in Canada and Wyoming in the U.S. Its range overlaps that of the widespread lake whitefish (Coregonus clupeaformis) in British Columbia and Alberta, and slightly overlaps that of the round whitefish (Prosopium cylindraceum) in extreme northern British Columbia near the Yukon border.
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Endemic to the lakes and streams of the northwestern U.S. and southwestern Canada, from the Lahontan basin in Nevada north to the southern border of the Yukon Territory. It occurs inland into Alberta in Canada and Wyoming in the U.S. Its range overlaps that of the widespread lake whitefish (Coregonus clupeaformis) in British Columbia and Alberta, and slightly overlaps that of the round whitefish (Prosopium cylindraceum) in extreme northern British Columbia near the Yukon border.
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All-Tackle World Records
Line Class
Weight
Location
Catch Date
Angler
All-Tackle
2.61 kg
(5
lb 12
oz)