Though they are safe to house with inverts such as Shrimp, Crabs, Snails, and Starfish, they are not reef safe as they will pick at Large Stony Polyp Corals and Clam mantles and may even nip at Feather Dusters, Bristle Worms, Clams, and Flatworms. The Pygmy Angelfish will graze the algae growth on live rocks between meals. Diet should include a variety of both veggie and meaty preparations such as spirulina algae, mysis shrimp, brine shrimp, and should be fed 3 times daily.