I have a Blue Devil(female) and a Red Devil(Male) that are in a 55 gallon tank. Currently they are seperated by a seperator. They were together without the seperator for a long time(about a year or so). Then i moved and they were put back together and still no problem. They actually mated and produced 3 set of offspring. Then I come home from work one day and the blue devil was missing some of the scales on her sides. I watch them for a couple hours after i get home while on the computer and find out the male is being overly agressive twards the female. So this wasnt a big problem i wanted to separate them anyways to keep them from mating again. I just went out and got the separator. So now here comes the problem. The female keeps trying to get to the male and the male keeps attacking her or they both lock lips and fight and the female always getting hurt. Is this normal and how can i keep them from fighting short of setting up another tank to separate them?