Blue Tang Sick

[naesco]

Originally Posted by Eb0la11

Hes rubbing a lot on rocks and sand. They do this with Ich, right?

Yes it is one of the first signs you see even before you see the dots.
The fish is attempted to remove the parasite from its skin and also its gills. By doing this they become subject to a potential opportunistic infection like bacteria or fungus.

BTW, add a bubbler in your tank and place a powerhead near the waterline to add oxygen in the tank to assist in breathing.
You will see that they will soon 'play' in the surge.