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Apolemichthys xanthotis, the yellow-ear angelfish or Red Sea angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae.
Apolemichthys xanthotis has a largely white coloured body with a black head, a yellow tail. The dorsal and anal fins are black with white margins. The black on the head is more extensive than in the closely related Apolemichthys xanthotis extending across the Gill cover and over the first few scale rows on the body. This contrasts with the yellow spot on the upper preoperculum. The juveniles have a wide black band running over the eye and an oblique are of black on the back, this patch fades as the fish matures. This species attains a maximum total length of 20 centimetres (7.9 in).
Apolemichthys xanthotis is found in the Red Sea and the Gulf of Aden. It is found on coral reefs at depths of 10 to 30 meters.
Apolemichthys xanthotis is a carnivore that feeds on algae, sponges, and small invertebrates. It is a territorial fish that defends its territory from other fish. It is a popular aquarium fish.