Dave Willis and I looked for info on RES stunting in both the literature and in discussions with a number of professors and pro fishery scientists. None were aware of it occurring , had never seen it and we found no written material indicating such. It is somewhat strange and the mechanism by which stunting is avoided is unknown. My guess is that RES stop or greatly limit reproduction when food is scarce. Other fish species are known to stop /limit reproduction under certain situations. LMB have been known do so if large amounts of sunfish are present. Other fish species will do so for various reasons. I do think RES can over eat their food base and get skinny and in poor condition. In that situation more food and/or less RES is the answer.