I have a male severum around 8-9" and a female around 5-6". I have had them living together since I got them both around 1.5". Recently the male became extremely aggressive and tore the female up pretty bad. I moved her into my growout tank so she could get better and as she got better she started to be aggressive towards my baby dats. So today I moved her back in with the male and it only took about 15 minutes before he had her beat into complete submission to where she was just hiding on top of the water. So I took the male and stuck him in my oscars tank for now. My question is, Is there anything I can do to keep this big b*stard severum from killing my female or should I just dump these guys and get fish that will defend themselves rather than just take a beating?