When we put my Dad's pond in, in western Ohio, we stocked FHM and GS in it prior to putting LMBs in. The minnows and shiners spawned and the banks were full of clouds of tiny minnow fry. A few months later we stocked 100 LMB's in the 5-7" range and in about a month or so could find now minnow fry. The adult GS's were confined to the shallow beach area of the pond and were under constant observation by 12 -15 LMB's.
After observing this, I don't think that GS's could take over a pond with a healthy LMB population, but that's just my two cents worth.
Good luck and good fishing,
Dan
