Mille Lacs walleye slot unchanged As expected, the Lake Mille Lacs walleye fishing regulations this season will be the same as last year. Anglers may keep up to four walleyes shorter than 18 inches, one of which may be longer than 28 inches. All walleyes 18-to 28-inches must be immediately released. Starting July 15, if angler harvest is low enough to allow it, anglers may be allowed to keep walleyes up to 20 inches with one trophy more than 28 inches in the four-fish limit. All walleyes from 20-to 28-inches would have to be immediately released. On Dec. 1, the slot would revert to four walleyes up to 18 inches, with one more than 28 inches in the four-fish limit. While the walleye slot is unchanged, the slot limit for northern is changing. Up to three northern pike shorter than 27 inches may be kept, one of which may be longer than 40 inches. All northern pike 27-to 40-inches must be immediately released. The change from the 24- to 36-inch protected slot implemented in 2002 creates a slightly more liberal slot limit that provides additional angler opportunity, the DNR says. A night fishing closure is in place on Mille Lacs from 10 p.m. Monday, May 16, through midnight Monday, June 13. During this period, no one may fish for any species between 10 p.m. and 6 a.m.