Georgette Douwma / Emperor angelfish (Pomacanthus imperator) with soft corals and sweepers. Egypt, Red Sea.

Juergen Freund / Detail of Emperor angelfish (Pomacanthus imperator) Bali, Indonesia, Indo-pacific

Georgette Douwma / Emperor angelfish (Pomacanthus imperator). Red Sea, Egypt.

Georgette Douwma / Emperor angelfish (Pomacanthus imperator) with Lyretail anthias / Goldies (Pseudanthias squamipinnis). Red Sea, Egypt (Digital composite)

Fred Bavendam / Emperor Angelfish (Pomacanthus imperator) in its juvenile color phase, Bali, Indonesia

Georgette Douwma / Emperor angelfish at coral reef {Pomacanthus imperator} Andaman sea, Thailand

Gary Bell/ Oceanwide / Emperor Angelfish (Pomacanthus imperator) juvenile being cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Tulamben, Bali, Indonesia

Gary Bell/ Oceanwide / Emperor Angelfish (Pomacanthus imperator) juvenile being cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Tulamben, Bali, Indonesia

Alex Mustard / Emperor angelfish (Pomacanthus imperator) with Cleaner shrimp (Urocaridella sp.) grooming it. South Ari Atoll, Maldives. Indian Ocean.

Georgette Douwma / Emperor angelfish (Pomacanthus imperator) swimming past soft corals (Dendronephthya sp]), Red Sea, Egypt. January.

Alex Mustard / Emperor angelfish (Pomacanthus imperator) close up pattern detail, Ras Umm Sid, Sinai, Egypt. Red Sea.

Georgette Douwma / Emperor angelfish (Pomacanthus imperator) swimming past Soft corals (Dendronephthya sp) and Lyretail anthias (Pseudanthius squamipinnis). Egypt, Red Sea. Indo-Pacific.