Copperband butterfly

I have been doing a lot of research lately and I've figured out that the copper and butterfly is very hardy once he is acclimated to the water and has a good diet. I'd like to get one for my 55 gallon tank with 2 clowns a coral beauty and one anemone. If I get him to eat shrimp will he be fine or should I feed him something else like clams attached to a rock. There is a video about that on YouTube. Any thoughts