Thanks a bunch folks!

I finally got a close up picture of this blue tangs face. One side of this fish is perfect in color now (including one side of its face) but the other side of the fish looks bad....especially its face.

Please take a look at this picture for me and tell if you still think the fish is just stressed or if you think it may even be hlle??? I think I spelled that right.

Again, I just got this fish and dont know that much about blue tangs but I have been reading articles and it just looks bad to me.
Its eating VERY well....actually like its never been fed before!!
I put a strip of dried red algae on one side of the tank and green algae on the other and he has ate all of that too....plus regular feedings