Good observation, although weight gain from high protein pellets is often reported to be around 2 lbs of pellets or slightly less to one pound of fish weight gain, not a 4:1 feed conversion ratio. New fish in a new pond can find a lot of available natural foods due to the low completion and lack of previous recruitment. This gives a big advantage to those first newly stocked fish which is why fish in new ponds seem to grow better than later generations - lack of competition. Reproducing fish at near carrying capacity or more put a lot of predation pressure on the existing natural food resource and the entire ecosystem as a whole.
Last edited by Bill Cody; 10/06/14 10:21 AM.