Thomas Knight knew he had a big trout, he just had no idea it a huge record setter.

Thomas is from Meredith, New Hampshire, and according to the Bangor Daily News, he caught the record breaking trout at Big Diamond Pond in West Stewartstown.

The previous record in New Hampshire was 28 pounds, set back in 1958, the newspaper reported.

He called the New Hampshire Fish and Game Department, and biologist Andy Schafermeyer looked the trout over and weighed that sucker. It weighed more than the scales limit of 30 pounds.

At that point, Thomas knew he broke the record, but had no idea by how much.

NH Fish and Game Dept Tom Knight

That big ol' fish weighed in at 37.65 pounds, the BDN stated. That is a New England record for a lake trout.

The biologist noted that most records are beaten by only a few ounces. But Thomas' fish smashed the record by over 9 pounds.

This fish wasn't just heavy, it was huge: more than 40 inches in length with a 27-inch girth, according to the BDN. Officials estimate that the fish was between 50 and 60 years old.