It sounds like the OP's mind is made up the way the fish sellers told him, regardless of advice on this forum. He will learn the "hard way", as many others do. Frustrating, isn't it? I see it all the time on other forums I am on.

In my original pond, only three CC, all look over three pounds, are still coming to pellets. Yet, I continue to catch and keep CC, and the same three come to pellets. The number coming to pellets is no indication of the total population. I suspect I still have about thirty CC of that size in the pond.