I don’t know, but they are very pretty fish. They are related to the angle fish and the tang. I have read they are hard to keep in a reef tank. But if you do get some, you need to keep them to a small group between 3 to 5.
Pennant butterfly/bannerfish/ Heniochus butterfly fish.
There is one species that is reef safe, the others eat coral polyps.
here are two links to show you the differences....Reef safe and NOT reef safe
hope this helps...
Nick