Sick Tang, Need help

Help,

Can anyone tell me what the red spots are on my yellow tang. They just showed up a couple of days ago. He is eating and swimming around fine, but I'm concerned that he will take a turn for the worse fast. Most of the red spots/veins seems to be toward the upper part of his body. I've had him for 2 months, when I first got him he had ich but haven't seen any signs for over a month after fresh water dipping.

I haven't seen any other signs of distress in any other fish/invertebrates in the tank, also have clown fish, angel fish and yellow goby.

How do I treat it?
What do I treat it wit

72 gal tanks been running since the beginning of April.

Thanks

 

I can't find a post from a few months ago with someone else's yellow tang that had the same condition.
It looks like a typical case of internal bacterial infection. Treat with saltwater maracyn-two.

 

Thanks,

Will have to go out and buy some.

 

looks like its some type of infection or a sting of some type go to ur lfs and tell them ur sit and take pics