I just purchased two Maroon Clownfish. I have kept a pair before and the last pair I even bought at different times. These I purchased today. Two. They are in a 120. Lots of rock. But they are going at it. They are very close in size which might have been a mistake. Maybe I should have made sure one was much smaller. Is this fighting likely to stop or is it possible one will kill the other. I did't have this problem last time. I read they sometimes fight to establish who is the female. I just don't want one to kill the other.