Your pond is now at an age that pellet fed YP are close to what I have observed as end of life span. I am learning that pellet fed perch do not live as long as YP eating natural foods. Your YP are matching my findings and theory. Still working on more details.
Those perch in your pond not eating pellets will live longer that those eating primarily pellets. Thus you might want to harvest the larger perch if you don't want them to die before a chance to harvest them.


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