Confair said he could tell it was a "big fish" but he was surprised to find it was a longnose gar and not the large blue catfish he had been expecting.
The fisherman had his catch officially weighed at Kool Ice and Seafood Company in Cambridge, where it was found to weigh 17.9 pounds, beating the 2011 state record of 17 pounds.
Confair said he kept the longnose gar alive out of the creek for two days before returning it to its home.
"It deserves to live," Confair said. "I'm hoping to set a bigger record. I know there are bigger ones, I've seen them."