100-Year-Old 'Monster' Fish, Weighing Over 90 Kg, Caught In Michigan

"Based on its girth and size, it is assumed to be a female and that she has been roaming our waters over 100 years," wrote the Alpena Fish and Wildlife Conservation Office.

The United States Fish and Wildlife Service last week caught a 100-year-old sturgeon, a unique fish species, in the Detroit River. The creature weighed just over 90 kg and measured 6 feet and 10 inches. The girth of the fish was nearly four feet, the Alpena Fish and Wildlife Conservation Office said in a post on Facebook. They added the "real life river monster" was one of the largest lake sturgeon ever recorded in the US and that she could be roaming in these waters for over 100 years. "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," the post read. The office also shared a photograph in which a staff member was seen lying next to the monster creature on the deck. The sturgeon was quickly released back into the river after being processed, the office added. The post has already been shared by more than 47,000 people on the social media platform and thousands of others have commented on it. Some even expressed shock that a creature that old could survive in the waters despite all the pollution. "It's amazing that fish has survived all the pollution over the years. Absolutely awesome to see this fish," wrote a user, Jason Kahler.