Lake Winnebago is one of the more heavily fished lakes in the state. Many fishermen consider it one of the nation's top walleye fisheries. Other species present include bluegill, largemouth bass, muskellunge, northern pike, perch, burbot, white bass, crappie, freshwater drum, channel catfish, flathead catfish, and smallmouth bass. In June 2010, Oshkosh hosted an event recognized by Guinness World Records as history's largest fishing tournament. A 2007 study put the economic value of recreational fishing at approximately $300 million per year.