I have had my clowns and. GCA for about three weeks. Both clowns were paired and after a week, one seems to have rejected the GCA, while one still pairs. Once a week I would give a small piece of silverside fish , first time while the GCA was trying to eat it an emerald crab crossed the tank and stole it...I gave another which it ate fine. This week I gave a piece it was moving it in to eat and the rejected clown came and pulled the food away carried it in its mouth and swam behind the reef spit the food out then returned to the front on the opposite side of the tank as the. GCA. The two clowns don't swim together anymore, not sure what's going on any ideas?