If you read that thread 100% GSF link that I gave that was what happened in my old pond. The GSF got established before my BG and LMB.
In my case I had my main pond 1/8th mile away and I just caught advanced size BG and LMB and stocked fish big enough the GSF could not eat. My old pond is doing fine now. I catch some GSF but mostly BG and the entire pond seems to be doing fine. Had I stocked only 2" BG and LMB likely the GSF would have just eaten them, reproduced, and I would have a pond full of stunted GSF and been very unhappy.
Had I not had access to larger fish to stock they would have been a problem. As long as your BG are as big as the GSF and their numbers are low you likely will not have any problem.
Last edited by snrub; 08/26/16 09:25 PM.
