In my 125 I have a pleco, some BA and bloodin tetras, and 1 geophagus surinamensis, and 1 8 inch Zebra pike cichlid who has picked off a couple tetras. I'm wondering If i could possibly add a 2.5 inch green terror along with a retock of tetras. The pike isn't very aggressive at all most of the time he doesn't even notice my tetras, and he doesnt even acknowledge my 3 inch geophagus that swims right in front of his face. Ive had a green terror in the past, and he used to fight with a jack dempsey I had to the point where I had to get rid of both him and the jack dempsey. Is this a bad Idea? or do yall think it would work out fine. If yall think my tank is a little too small for this just lmk what you think.