A Kansas angler fishing Kill Creek Lake on Feb. 23 landed a 15.72-pound possible state record rainbow trout, The Kansas City Star reports. Josh McCullough was just minutes into his trip when he caught the fish.

“I really thought I had a turtle at first,” said McCullough, 22. “It just wasn’t fighting that hard. But then it came to the surface and my heart started racing. I had never seen a trout this big.”

The fish was weighed on a certified scale at a nearby grocery store. McCullough’s catch has been verified and he’s already completed an application to overtake the current record of 15.43 pounds. He will have to wait through a 30-day review period before he receives official word.