The “MN Fishing opener” is set by statute:
97C.395 OPEN SEASONS FOR ANGLING.
Subdivision 1.Dates for certain species. (a) The open seasons to take fish by angling are as follows:
(1) for walleye, sauger, northern pike, muskellunge, largemouth bass, and smallmouth bass, the Saturday two weeks prior to the Saturday of Memorial Day weekend to the last Sunday in February