you can feed tem almost anything, but I would try and stick to things that it would naturally eat, SW prey...crabs, fish, shrimp, snails, squid. And they do not need to eat live all the time. I have fed them everything from live to flake food, frozen mysis, shrimp pellets, clam, mussels, oysters on the half shell. Just keep it a good variety. They will lose smashers every once in a while in my experience anyway. My personal theory and experience is they will lose them most commonly if the levels of Calcium, Iodine, and Alk are too low. Also I have noticed them lose smashers when given hard shell prey right after moutling, most likely the new smasher is still somewhat soft shell and breaks off. But it will grow back.
