The parasite fauna of brown trout Salmo trutta, white fish Coregonus lavaretus, and grayling Thymallus thymallus from water bodies of North Karelia (Russia).

The data on parasite fauna of brown trout Salmo trutta, whitefish Coregonus lavaretus, and grayling Thymallus thymallus from lake-river system Paanajarvi-Olanga (White Sea basin) are presented. As lake-river systems on this area remain in natural conditions, without any anthropogenic pressure, the parasite fauna of Salmonidae in these water bodies had not been changed and has an archetypal status.