In a .1 acre pond, I would think just 3-5 WE or SMB would virtually wipe out a huge amount of FH. For example, in my aquarium, I have (1) 8" SMB, (1) 8" BG, and (4) 3-5" Hybrid Crappie. (60) 2-3" feeder Goldfish last less than 1 hour in the tank with heavy cover to hide in. All these fish are also pellet trained and fed heavily daily.
Some removable cover and a faster swimming fish like Golden Shiners might produce a longer lasting forage base, but would still not support many voracious predators.
