I have a Powder
blue tang and a Scopas Tang. They seem to get along. The Powder Tang tends to swim around all day while the Scopas hangs in the back, but during feeding time I've seen the Scopas actually take food out of the Powder's mouth. Once in a while there will be an incident - but only when Scopy decides he's going to violate Powder's cave.
Anyway, I like Tangs. I'd like to get a new one, but first I want to make sure they are compatible; I read that scopas tangs don't get along with any tangs of the same genus, and I'm not sure about the Powder Blue. He was introduced after Scopy and is about an inch bigger which is why they get along, probably. I don't want to get a tang that's even bigger than Powder just for compatibility reasons.
What do you guys recommend?