Last week I set up a 55 with a cycled Eheim 2026 and an AC 100 HOB. I have my 75 with 4 female Duboisi, 6 male Duboisi of which 2 are dominant. Also have 4 Moori red rainbows in the 75. I want to put the Moorii in the 55 and possibly the 4 leftover male Duboisi. The Moorii and 4 non-dominant Duboisi males kind of hang out in the center top of the tank between the 2 rock piles . Venturing into the other zones brings on armageddon from eaither dominant male. Will this work ok or will the Duboisi males take over the tank ? I am going to get more Moorii down the road and create a colony.