Even "up NORT" (that's a typed version of a Minnesooooota accent, in case you didn't know), the LMB occasionally spawn at age 1, and almost always spawn at age 2. That would especially be true in newly stocked ponds. I guess that in high density, slowing growing (stunted) populations, they might not reproduce until 3, but 4 would really be old.

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From Bob Lusk: Dr. Dave Willis passed away January 13, 2014. He continues to be a key part of our Pond Boss family...and always will be.