One of my neighbors stocked HBG and CC over 10 years ago into a 3/4 acre pond. The CC finally were fished out or died off and the HBG population has exploded. Most of the HBG caught now look almost like small GSF and the largest ones that actually look like HBG are no more than a half pound and maybe 7 to 8 inches. They restocked CC in there last year. No LMB are in the pond as far as I know and can tell. Stocking a few FEMALE LMB in that pond would result in some very large LMB in about three years.