[Taras1]

At 3" or there about, you might have 2 females on your hands. They are probably vying for dominance. The problem is that clownfish as juveniles are usually "male." Only one juvenile changes sex to become a female which is dominant in the school. One "male" will become the dominant male and the others remain smaller and non-dominant. If the dominant female should die, then the dominant male becomes the dominant female and another male will become the dominant male of the group. A female cannot change back to male, so if you happen to have two females, you probably will need to go back and try to exchange her for a smaller (much smaller) clownfish.

I usually recommend getting several small (about 1 - 1 1/2") juveniles and letting them grow into the heirarchy. Otherwise, get a mated pair for your tank.