Let me know when/if it does split. As for the clowns i've found that my three striped damsel attacks me when my arm is in the tank, not my clowns. In fact both clowns will very gently rub up against my arm and gently pic at my arm as if trying to eat. But my damsel will literally grab onto my arm and shake violently, doesn't really hurt just feels like a pintching sensation, it just scares me.