Tonight I look over after watching a show and find my female clown rolling around upside down! No more than 10 minutes before it was doing just fine and swimming with her mate. Upon closer examination I find what I assume to be two small puncture wounds, one on either side of the fish. How often does this happen? The pair has been together for almost 3 years so its very sad. I'm wondering if the yellow tang got spooked and smacked the clown before looking, he loves hanging around the clowns but I have never seen them be aggressive towards one another.