Starry Blenny cleaning tang?

[palvyre]

So I saw my starry blenny eating something off the side of my new blue tang today. Anyone seen a blenny clean other fish before? It didn't appear to be aggression.

 

[palvyre]

Bleah, think the tang has lymphocystis. If he'd just start eating.

 

[palvyre]

One of the cysts on his side must look like food to the blenny. He keeps trying to eat it off whenever the tang gets close. The tang isn't too happy about that heh.