not really. these fish are delicate but if you are careful and QT properly and ween them onto good food then they are fine. as for eating corals, its probably a 80% chance they wont , but you are taking a small risk. Heniochus butterflys are the only other BFs that are often considered reef safe, but still a little chancy. kiss any worms goodbye. feather dusters and coco worms are worms , so they will be eaten.