I'm a fairly new fish keeper. My daughter worked at a pet store and brought home a green terror cichlid because he was getting picked on and put him in with our Electric Yellow cichlids. He's been in a 40 gallon tank with two of them the last year and he's grown tremendously and I am getting ready to move him into a 75 gallon. I need help with ideas for tank mates that I can put with him? Thanks in advance.