Steve McComas (a k a: The Lake Detective) held a few of the more than 2,000 fingerling walleyes released into Lake Nokomis this week. Leah Chalmers, at right, assisted. There have been so many bluegill in the Minneapolis lake in recent years that they’d begun searching for food on the lake bottom, stirring up sediment and keeping the water cloudy, much as carp do, said McComas of Blue Water Science, a St. Paul organization coordinating the four-year project. His group has been stocking the lake with walleye, which have been eating the bluegill and reducing their population, McComas said.