Pomacanthus imperator - The Emperor Angelfish is a hardy large angelfish species famous for their incredible coloration. Beautiful at all life stages, this species has one of the most dramatic color transitions of all marine angelfish. The juveniles have bright white and blue lines and spotting and they begin to develop blue bodies with bright yellow striping as they transform into adults. The transition is exciting to watch, and these bold fish make beautiful, interactive pets.
They can grow to over one foot in size so an aquarium over 250 gallons is recommended long term for this species. Young Emperors can be grown-out in smaller tanks. It's always wise to add new fish to your aquarium using an acclimation box.They also require plenty of liverock and structure to graze and swim through. Emperor angelfish may graze on certain corals but are generally reef safe with caution.