Was a 240-Pound, 7-Foot-Long, 100-Year-Old Fish Found in Detroit River?

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This venerable lake sturgeon could well have been born during the presidency of Warren G. Harding.
Scientists found a 240-pound, 7-foot-long lake sturgeon in the Detroit River in April 2021 that may be a century or more old.

On April 30, 2021, the Alpena Fish and Wildlife Conservation office — a branch of the U.S. Fish and Wildlife Service — shared news on Facebook of a "once in a lifetime" catch:

A once in a lifetime catch for our Detroit River native species crew last week! This real life river monster was tipping the scales at 240 lbs, measuring 6'10" long, and a girth of nearly 4′. Caught in the Detroit River, this fish is one of the largest lake sturgeon ever recorded in the U.S. Based on its girth and size, it is assumed to be a female and that she has been roaming our waters over 100 years. So, she likely hatched in the Detroit River around 1920 when Detroit became the 4th largest city in America.

This fish was returned to the river after being processed by scientists from the Alpena office. That office, according to its website, deals with "conservation, restoration and management of the fishery resources of the Great Lakes Basin." The sturgeon catch was part of that office's native species restoration efforts:

The U.S. Fish and Wildlife…
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