Copperbands can be finnicky, sensitive fish that may or may not eat aiptasia and may or may not nip corals. The last copperband I had wouldn't touch aiptasia, but enjoyed eating acans.
Matted/aiptasia filefish eat aiptasia in more cases than not, but often when aiptasia are gone will move on to nipping fleshy corals.
Any other fish that will eat aiptasia will also be more likely to go after coral.
Matted/aiptasia filefish eat aiptasia in more cases than not, but often when aiptasia are gone will move on to nipping fleshy corals.
Any other fish that will eat aiptasia will also be more likely to go after coral.