Average twice a week for ours. Get medium sized shrimp from
seafood counter. take home and clean up. Cut into about 3 and freeze. Thaw and give him a piece. He usually comes to the top and lays outward, we just lay a piece in the middle and he grabs it. He's quit the begger. :yes: If they are kept fed they shouldn't cause any problems. Natural predators and not reef safe. We love ours, very entertaining