I am thinking about getting a Copperband Butterfly (CB) to help control aiptasia plus they're really pretty fish. Have you had success keeping CBs and are they as finicky as people say they are? Have yours eaten your featherdusters and anemones? What about other soft corals? I have some pretty aggressive eaters (5 chromis, regal tang). Do you think a CB would get enough to eat with this crowd around?
If you are going to get one, then get it now. That is a pretty laid back group of fish, other than feeding time. The problems I have had with them, is my RedSea Sailfin tang harassing it to the point it would not eat.
The problem I have with the tang is the body shape of the CBB. The tang sees it as a threat to his territory.