I have a colony of Neochromis Omnicaeruleus, 3m/3f. The last time I had a holding female, she was killed in the main tank. Now it looks as if I have 2 holding females, out of 3. I have separate tanks ready for all 3 fish...should I pull the non-holding female as well? Leave the 3 boys to "duke it out?" I'm concerned about leaving one female in the tank with the males. The females are almost as aggressive as the males...so I'd use separate tanks for them.