Originally Posted by austinsdad
Chromis have a way of selection - in that the odd fish is castoff from the rest. This seems to happen as one becomes the dominant female I think, and the others fall in line. The odd fish out gets the short end and sometimes aren't allowed to hang out or eat with others. Maybe its just the natural selection process thats going on.
Thanks for that explanation, that clarified the situation very well. I hope this doesn't stress out the outcast Chromis