a pond is much harder to manage than even a good size ft.. you need a predator fish to manage the population along with the whole food chain
newer studies are showing that regular bg can grow as well as if not better than hybrids
google "condello strain" bluegill, plate size/shaped body in a little over a year,using selective breeding
from what i've heard about my fish, i probably have green sunfish and maybe a few hybrids,, i need to get someone over with a good camera