ST. PAUL, MN (KDAL) - The Minnesota Department of Health (MDH) has updated its fish consumption guidelines and finds that fish from water bodies in northeast Minnesota generally have higher mercury concentrations than elsewhere in the state. For fish caught in St. Louis, Lake and Cook Counties, sensitive populations, that include kids under 15 and anyone who is pregnant or breastfeeding, should avoid eating any size muskies, northern pike that are 26 inches or longer and walleye that are 18 i...