Every summer i go back to wisconsin to visit family and fish. But i hAve noticed the last couple of years, a increasing populattion of bullheads. Its really frustrating when your trying to catch the game fish such as perch and walleye and you keep catching bullhead, little ones. It seem like there was an infestation because it wasnt like this 5 years ago. Has any1 noticed this? and Y do you think this happend?