Originally Posted by Bill Cody
The main problem that I have experienced of having green sunfish with yellow perch is as the GSF population increases proportionally the YP population decreases because the GSF with their large mouth and aggressiveness heavily reduce recruitment of YP. GSF eat lots of tiny YP. I am confident GSF out compete YP.

Agree and add that in the US ,the warmer the water profile the bigger the advantage the GSF have over YP. As an example your problem will be larger than the ones Bill noted due to location.

Agree with jpsdad also that due to GSF aggressiveness you should be able (catch , seine , trap) enough to manage the situation.

Good luck and keep us posted !