ok so i have 3 polypterus 5 inches each. i have 2 parrot cichlids. 1 is red blood parrot. the other is a flower horn parrot cichlid. 2 tiger barbs ( going to get 2-3 more) going to get some electric blue rams and some fire red agasizzi. i'm going to take the 2 best of both and breed them in a 20 gallon. not at the same time but with like a 3 months in between. but i'l planning on getting 1-2 more parrot cichlids. but i want a south american cichlid that won't mess with anyone. will get big but not too big, and looks nice. If theres any problems with my stock let me know i'm not a south american expert. my parrot cichlids are both closer to non-aggressive and are both about 5-6.5 inches. thanks in advance 