Angelfish are some of the most colorful and interesting reef fishes in the ocean. They come in all sizes, from the small-sized genera at 10cm, such as Centropyge, to the large-sized genera up to 60cm, such as Pomacanthus. Angelfishes have small mouths, so they are constantly eating to compensate for their large appetite. Their diet in the wild consists of a wide variety of food such as sponges, coral polyps, seaweed, zooplankton, and sessile invertebrates. We need to pay attention to the environment they are from to try to satisfy their needs in our aquarium.