Coregonus vandesius, the vendace , is a freshwater whitefish found in the United Kingdom. Population surveys since the 1960s have revealed a steady decline, and the fish is no longer present in some of its previous habitats, but is still present in Bassenthwaite Lake and Derwent Water. The main threats it faces are eutrophication and the introduction of alien species of fish that eat its eggs. The International Union for Conservation of Nature has rated its conservation status as "endangered".

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