The Walleye & Bullhead Connection Juvenile Walleyes in Lake Metonga (C)Engbretson Underwater Photo Something was going very wrong in Lake Metonga. The 2,000-acre lake in Wisconsin’s north woods had been a successful walleye lake for decades, but by the late 1990s, natural reproduction and walleye recruitment had slowed to a trickle. To make matters worse, by 2004, the adult walleye population had sharply declined.  Spawning habitat was excellent, but young fish, either stocked or natural, were not surviving to adulthood.…