The best way to measure how old a fish is is by counting the number of rings formed on a chunk of calcium living in its inner ...

The oldest known lake trout in the Great Lakes was recently documented by researchers at the Michigan Department of Natural ...

The fish, dubbed Mary Catherine, is the oldest known lake trout in the Great Lakes, the department said last week. The DNR ...

Researchers say that a lake trout recently captured in Lake Superior is believed to be the oldest-known specimen of its ...

The old girl one-upped a 42-year-old trout found in 1998 in Lake Superior. She’ll be remembered as an unremarkably sized ...

Most anglers will brag about catching a wily old fish, but the one Michigan Department of Natural Resources researchers ...

Lake trout in Lake Superior are believed to live about 25 to 30 years. The Michigan DNR says that the oldest trout reported ...