Blue face angelfish

A large fish and a rare species in Japan. Their coloration differs significantly between juveniles and adults. Juveniles are blue with white stripes, while adults have blue faces, a patch of yellow around their eyes, and large black spots on their dorsal fins. They are omnivores that feed on things like algae, sessile organisms, and coral polyps.

Scientific Name
Pomacanthus xanthometopon
Order: Perciformes, Family: Pomacanthidae
Indian Ocean, western Pacific Ocean