I'd see what/if it eats in the LFS. I'd hold off on buying it until you see it eat. I had one that ate frozen, but that is often the exception. I'd offer salt-acclimated, gut-loaded ghost shrimp and feeder guppies. you still need to be careful of aggressive feeder tankmates, even the non-predators, like tangs or angels. these fish are ambush predators and not at all aggressive eaters. I have Hawaiian leaf fish, which I consider to be similar in some ways. they can't out-compete much of anything for food. I keep them with seahorses, small blennies and an orchid dottyback.