So in my 29 gallon south American dwarf cichlid tank, I have a pair of sunburst cockatoo cichlids, 2 bolivian rams, a few cories, 2 Kribensis, and one extra female triple red cockatoo cichlid. The problem is, the original pair of cockatoo cichlids established their territory, and it happens to be the entire right half of the tank. So that leaves the other half for the rest of the fish. (However, the cockatoos don't seem to mind the corys) And the bolivians came second, I actually had gotten three, but they turned out to be males. One was bullied to death before I could save him, and the other two claimed their tiny corner territories. I got the kribs yesterday, along with some plants. I wanted a pair of kribs, but they are both female. Now, the larger female established her cave, and chases the smaller one. The pair of cockatoos are chasing everybody. And the little female cockatoo just hides. the bolivian rams are constantly duking it out. What I want to do, is; - Take back both bolivians, get a male and a female. (this way, one won't fight the other, because they're both new) - Take back the small female cockatoo, maybe exchange it for a bigger one - Take back the small krib, and get a male What I want to know, is; - Is there something I can do to make the Cockatoos' territory smaller by adding lots of plants and caves? - Are there any south American fish (don't have to be cichlids) that can sort of make things calmer in the tank? like maybe tetras? thanks.