observations on clownfish breathing patterns

[OceanicApe]

Just got back from Orlando, Florida and found a skeleton of one of my clownfish in my room. Now I'm left with the last one and it's breathing rapidly - can't be the water stats, maybe it's stressed from the angelfish? Or could it be marine velvet, I don't see any spots though.

[felinxo]

I'd like to know more about your tank to help you figure out what's going on. How's the surface agitation? What are your current water stats? Are the other fish, aside from the clownfish, doing alright? Have you experienced any other fish deaths recently?