The Singapore Angel, Chaetodontoplus mesoleucus, displays a distinctive vertical bar running through the eye area and a bi color body that starts out as a white patch behind the head fading into a larger black area and a yellow and gray tail. 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.