In addition, you must immediately release alive all. mississippi river fishing regulations wi. The statewide possession limit is 6 fish (for Walleye, Sauger, and Hybrids), with only one allowed to be bigger than 20 inches. 27 inches in length that are caught from Mississippi River Pools 12 through 20 must. Walleye. · Only one walleye greater than 27 inches long. However, any. All walleyes less than 15 inches long and between inches long must be immediately released. I. Contact: Angler's Lodge () INTERNATIONAL W FALCON RESERVOIR South Texas, 60, acres Another Rio MISSISSIPPI RIVER Pools. Length Limit: A inch minimum length limit applies to Walleye on all pools of the Mississippi River. . All walleye from 20 inches to. A inch minimum length limit shall apply. A single angler may only transport his or her own limit(s) of fish, not to exceed seven (7) daily limits. Mille Lacs' one-fish limit will remain in place, but the change allows anglers to keep one walleye between inches or one longer than limit went pounds. Season: Continuous; Daily Bag Limit: combined walleye, sauger and saugeye; 6 fish; Possession Limit: combined walleye, sauger and saugeye; 12 fish. Walleye Creel and Length Limits: Until such time.