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Proportion of river- and sea-spawning whitefish in catches at the Åland Islands (Baltic Sea), estimated from gill raker counts
(Boreal Environment Research Publishing Board, 2019)
The Åland Islands are feeding grounds for river- and sea-spawning whitefish (Coregonus lavaretus), including also hatchery-reared released whitefish. Management of fisheries requires knowledge of whitefish origin from their ...