I have a 55 gallon with some central/south american cichlids in it. (1 salvini, 2 convicts, 1 EB Acara). I know this stock is not good, it was poor planning on my part. They are all small so it is ok at the moment, but I am aware that I most likely cannot keep this stock long term. My main question is, can I keep a green sunfish in this tank with ANY of these cichlids? I know generally it is not recommended to mix fish from different regions, but let's just say it was going to happen indefinitely (it's not). I miss having natives and want to try and keep a "monster" looking fish.
So if I had to get rid of some fish to get a green sunfish.... could it be done and which fish?