I have kept a few cichlids and found that the more caves or places of refuge,the better. I have used terra cotta flower pots,cactus pots,coffee cups,pvc pipe,large rock formations with flagstone and slate. Now some of these didn't look all that attractive ,and re-arranging them on regular basis seemed to help by not allowing the fish to become too comfortable with any one particular Hidey Hole. As Mitch indicated,the dominant fish or fishes will always hold the best territory. Re-arranging(sp)? them on frequent basis kept this from happening and fishes were always staking out different turfs.