JHAP establish a permanent Gam population in a pond with predators using 70 stockers, half of which he estimates were eaten in the first few minutes.
Oh sure throw me in front of the bus again. JHAP kills his fish, JHAP is a fish stocking idiot, JHAP shouldn't be trusted with live fish and probably not dead ones either.
DIED stocked 9 (nine or eleven I forgot) Gams and ended up with huge schools of Gams. We netted 70 Gams from his pond and transfered into my pond which I quickly reduced to about 35 in an incident that I will never be allowed to forget and will forever be brought up on this forum. My 35 Gams turned into LOTS and LOTS of them.
And yes bass love Gams. The love them to death.
Folks have brought up some negatives about Gams, but I haven't noticed any real problems with them. At my place they breed in early spring and create HUGE swimming schools. You see Gam schools swirling at the surface that contain thousands of Gams. Once the sunfish and LMB fry get big enough they begin to voraciously feed on the Gams and their numbers are significantly reduced. Like DIED said it seems like they are a good link in the food chain.