I am currently in the process of setting up a 75 gallon as an upgrade from my 55 gallon. I have 1 adult male firemouth, 5 tiger barbs, and 6 rainbowfish as well. I may leave the schooling fish in the 55 but they are honestly all some of the most docile fish, even the tiger barbs, so who knows. My question is whether I should add 3-4 more FMs in the 75 or to add 1-2 different CA/SA cichlids in with him. I've been looking at blue acara and severums but im really not sure whether to add more FMs or a mix. Any input is appreciated.