purple bested yellow

Well when I got up this morning I found my yellow tang stuck between two rocks not sure how he got there like he was but i got him unstuck but he wouldnt swim...

I recently got a purple tang. I know the yellow wouldn't leave the purple alone. I never saw this but I think the purple might've got the yellow with his barbs. I could really look at the yellow well enough to find any signs of injury but I have nothing else to explain his lack of movement after being freed from the rocks this morning.

Any other theroies? I bet by the time I get home he'll probably be lost which sucks!

 

So is the yellow dead or just mostly dead?

 

Like when you say he wasn't moving, did he float? Sink?

 

Rode the current flapping his fins the hit the sand. My wife says he is a pale yellow/white color. I think he didnt make it.