I have had my Red Sea Max set up with fish for about a month now and bought 3 tiny Percula clowns for some of the first fish a month ago. Now they are growing and 2 are growing faster than the third and the two larger ones are "posturing" and shaking at each other quite often. I assume this is because the two are males and the little one is female. Now, do I need to remove one or can I get another one to solve the problem? Also, if I can get another how do I tell if it is a female?