Pond Boss Forums FISH & FISHING Sunfish-Including Largemouth and Smallmouth Bass Bluegill size, genetics or environment?

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Both lakes are pretty large, one is probably 15 square miles, the other several times that. Both are heavily fished, especially ice fished. The smaller of the two has the smaller average fish. Most ice fishermen will throw back 6-7 for every one they keep. It is fairly easy to take a 50 fish limit nearly any afternoon you want to. The larger lake has huge panfish and it is usually more difficult to catch a limit there, but nearly all fish caught are of "keeper" size. The explanation of the effect of culling makes sense. I appreciate all the replies, you all are great!