North America: Probably restricted to northern Northwest Territories, Yukon Territory in Canada and Alaska in Yukon River, Paxson Lake, Copper River system, Anderson River and Mackenzie River delta. Hybridizes with Stenodus leucichthys, probably a result of simultaneous broadcasting of reproductive products in the same area; occasionally hybridizes with Coregonus sardinella (Ref. 27547). Belongs to the Coregonus clupeaformis complex (Ref. 27547).