Its flora and fauna is diverse and includes salmon, trout, otters, twaite, shad, lamprey, perch, sea trout, chub, dace and roach as well as kingfishers, herons and other wildfowl and bird life.
From the en.wikipedia.org
Sea lampreys migrated to several Great Lakes where they did not previously exist, and now prey on popular game fish, like lake trout, whitefish, chub and herring.