The Maculosus Angelfish, Pomacanthus maculous, is also known as the Yellowbar Angelfish, Yellow-band Angelfish, or Blue Moon Angelfish. It features a deep royal blue body with a thick yellow vertical band with an elongated dorsal fin. Like many large Angelfish their appearance will change dramatically from the juvenile to adult stage. Due to aggression towards other Angelfish they are best kept singly but will do well with other larger fish.

They are not reef safe, as they will nip at soft and stony polyp corals, sessile invertebrates and clam mantles. Diet should include a variety of spirulina, marine algae, high quality angelfish preparations, mysis and brine shrimp, 3 times daily.