There's a coral banded shrimp and skarlet cleaner shrimp that are his roommates. He doesn't seem interest in them at all. The CB shrimp I caught, the skarlet was given to me. I know they may get eaten, but so far (6 weeks) they seem okay with one another.
He eats live crab and jumbo frozen shrimp. The crab I catch once a week, it's the most fun to watch him eat, but a real pain to clean up the scraps. The shrimp I always put in a bubble gum tape container so he has to work (about 12 seconds) to get it.