I have a 120g tank with 1 male Jack Dempsey (5in), 1 male Firemouth (3in) and 3 Clown Loaches. I do 85% water changes every week and the tank is heavily filtered. I would love to add a Midas or an Amphilphus Amarillo, but that prob.wouldn't happen but thats my first choice let me know. I was also thinking Green Terror or a Texas cihlid. Any other suggestions would be great, I would love to add a large growing fish and I am a fan of big natchul humps. Please let me know what you guys think, and remember I would only add one more fish, what do you guys think? Thanks