please advise my pond is now 3 years old. I stock it with FH and OCNBG and Red Ear. I did not notice and green sun fish last year but this year we are catching a lot of them. My goal was to raise large CNBG are these going to cause a lot of issues and if so what should I do to get rid of them. I do not have any predator fish in the pond. Well Grandson did put in 5 LMB that he caught from a near by lake.