Fished this 1/20th acre forage pond for a while yesterday. LOTS of hybrids (RESxGSF) 5-6" long. Moved all of those I caught, about 15, to the main pond. Caught several nice RES and a few smaller ones. The hybrids are much more aggressive so it is pretty easy to catch them. Throw out a little feed in one area and the fish are soon concentrated there and easy to catch. I want to move all the hybrids out I can catch as well as all the smaller RES, to make sure the biomass level does not get too heavy. I return all the large good looking RES I catch to spawn and create more.
Descriptions along with the pictures.
Edit: See pictures in post directly above for the parental GSF stock creating the hybrids. Also compare to the hybrid picture below.