5 year old buck +
It is a very fine line. I think I actually have it balanced both ways. Only took 20 years to figure it out. I no longer stock regular bluegills. They seem to reproduce to much and ended up stunting all the fish. I stock hybrid bluegills that don't reproduce, and went with pumpkinseed sunfish that are not prolific as the regular gills. Perch, crappies,largemouth, and catfish. We catch huge hybrids and the perch and crappies are 10-12 inches on average on a 2/3 of a acre pond.Bass are up to 18' which is good for WI. The bass have started to reproduce pretty good, stocked a few northern pike to try to keep them in check.
My understanding is that you should only have one large predator fish like a northern pike or musky per acre. How long have they been in and any observations yet?