Meet “Mary Catherine”, A 62-Year-Old Surprise from Lake Superior
Fisheries biologists have uncovered a remarkable fish story in Lake Superior: Mary Catherine, a lake trout (Salvelinus namaycush), is now believed to be the oldest lake trout ever recorded in the Great Lakes. Hatch year: 1961. Caught during a routine survey in September 2023 on Klondike Reef, a remote reef in Lake Superior, Mary Catherine was found to be 62 years old, twice the age expected for a lake trout under ordinary conditions. In September 2023, fisheries crews working Klondike Reef in Lake Superior aged a lake trout, affectionately nicknamed “Mary Catherine”, at 62 years old, making her the oldest … Read more