Which Shell Lake. . .in Becker County, MN or in western, WI? If you are looking for the MN version I can tell you it is full of large Walleyes, huge slab crappies, and countless snake Northern Pike. The lake has huge wild rice beds in it and the rice-worms make good forage for the Walleyes and Crappies. It was once famous for large Pike but over-harvest has taken it’s toll on the average size.