I have lost too many fish to my male Festae. He has relentlessly killed or nearly killed every thing in my tank. He has turned on yet another female. I won't let him kill her. I thought that they would be fine until I got my 210gal. in a few months but no dice. He is determined to have the tank to himself. Instead of having a 120 or a 210 with one lone fish I am going to let him go so that I can have a more diversified stock now and in the future. I'll keep the little lady but her man has to go. The bad thing is that he is a great looking fish, strong and fast. Even as I write this the female is in breeding dress shaking and twitching in his face. I'm thinking of getting rid of her mate to save her but she keeps running back to him. So should I let him go and make room for a different stock or keep him and see what happens?