2 years ago in April I caught a 23 inch walleye off of the dam. I caught it on a rubber sinko while bass fishing. The walleye was spawning because as I pulled it out of the water she was releasing eggs so I quickley released the fish!
No natural reproduction in Nimi. They go through the motions, but no success or not much anyway. Taking a female at any point there would not affect the population future. If that was the fish in the picture, she looked pretty spent too.