Copperband butterflyfish eating aiptasia

My Copperband butterflyfish eating aiptasia. I have a separate 3ft tank in which I grow macroalgae and aiptasia and about once a month I give my copperband a treat. PLEASE NOTE: Not all copperbands will eat aiptasia, I was lucky in that I got one that was eating frozen foods, normally these fish will not eat frozen foods or flakes and inevitably starve and die in an aquarium, if you want to buy one of these fish, please ensure it has a good appetite at the shop and that they show it eating mysis, krill or enriched brine shrimp before you buy it. :)