Bruce, the 22 small RES I had out in my shop were eating close to an ounce of bloodworms/small pellets a day until the water temp dropped to 55 degrees, then feeding dropped in half. At that point I decided it was time for them to go back into the pond. The RES were 1-2" when I seined them at the begining of August, 8 weeks later they were 2-3"+. Here is one of the bigger ones I turned loose.
