St. Anthony angler breaks catch-and-release record for flathead catfish

(Minnesota DNR)

A St. Anthony angler has broken the state record for flathead catfish in the Minnesota DNR‘s catch-and-release length category.

Mark Mosby caught, measured and released the new record flathead catfish Aug. 2 on the St. Croix River near Stillwater. He caught the 52-1/2 inch fish on 80 pound braided line with a 40 pound monofilament leader. It had a girth of 32 inches.

Mosby, who describes himself as an occasional angler, said his fishing partner made sure his fishing gear was ready for a battle as they were targeting big flathead catfish known to inhabit this stretch of the river.

“Kudos to my fishing partner John Kaiser for his knot-tying ability,” Mosby said. “The flathead put up a great 15 minute fight right up until he got to the boat, and the knots held true.”

Although weight is not required for the catch-and-release record, the fish was estimated to weigh about 70 to 80 pounds, based on length and girth. The current record for certified weight of a caught-and-kept flathead is 70 pounds.

There are two kinds of Minnesota state records: one for catching and keeping the biggest fish in each species based on certified weight; and the other for the length of a caught and released muskellunge, lake sturgeon or flathead catfish.

Find current records and guidelines for each type of state record at

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