My biggest tank is a 125, which is my community tank. It has 2 Oscars M/F, Giant Gourami , Johanna Pike, 3 Redhook's, Tinfoil Barb, Wolf fish, pleco. The rest of my cichlids are pretty much separated. I've had these guys beat the crap out of each other before that is why I put them in separate tanks. I am acquiring a 75 gal setup sometime this week. I may put the smaller fish from the 125 in there and reintroduce the Jag, Gt, and Trimac to the 125. There is a cheap Jack Dempsey at a local petsmart he's about 8", I'm thinking about adding him too.