Copper Banded Butterfly...not visibly eating

[naesco]

What you are experiencing is what most reefers who try to keep this difficult fish experience. I hope it won't but if it is not eating it will starve to death.
It is searching for food it is used to finding in the sea but is not available in your tank.
Try soaking a variety of food in garlic extreme as it acts as an appetite enhancer.

You are far better off buying peppermint shrimp to deal with aiptasia Just make sure that acclimate the shrimp for at least one hour using the drip method and turn the lights off before you add it to your tank.