Aiptasia eating butterfly fish

[Myka]

As others have mentioned, any fish is hit or miss when it comes to Aiptasia, and I think your tank at 80 gallons is too small for any Butterflyfish anyway. I would rather suggest you try out 4 Peppermint shrimp. Try to get them from at least two different sources. Peppermints are hit or miss too, but at least they are only $10-15 each and don't add to the bioload so much. ...Or is there a Lionfish in this tank?? (looking at your sig)