Researchers discover 62-year-old ‘Mary Catherine’ — the oldest known lake trout in the Great Lakes

The oldest known lake trout in the Great Lakes, 62 years old at the time of capture, recently was documented by researchers at the Michigan Department of Natural Resources Marquette Fisheries Research Station. 
This fish was collected from Klondike Reef in Lake Superior in the fall of 2023 by a team of intrepid researchers from the DNR, U.S. Fish and Wildlife Service, University of Wisconsin-Milwaukee and Purdue University.

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