Emperor Angelfish - TheLiving Encyclopedia

The emperor angelfish is a species of marine angelfish. It is a reef-associated fish, native to the Indian and Pacific Oceans, from the Red Sea to Hawaii and the Austral Islands. This species is generally associated with stable populations and faces no major threats of extinction. It is a favorite of photographers, artists, and aquarists because of its unique, brilliant pattern of coloration.

📌 Taxonomy

The emperor angelfish was first formally described in 1787 as Chaetodon imperator by the German physician and naturalist Marcus Elieser Bloch (1723–1799) with the type locality given as Japan. Some authorities place this species in the subgenus Acanthochaetodon. The specific name imperator means "emperor" and reflects the Dutch name Keyser van Iapan meaning "Emperor of Japan" coined by the publisher Louis Renard (ca. 1678–1746) in 1719, possibly reflecting its majestic appearance.

📌 Distribution

The emperor angelfish has a wide Indo-Pacific distribution. It occurs from the Red Sea southwards along the East African coast to Mozambique and Madagascar, eastwards through the Indian and Pacific Oceans as far as the Tuamotu Islands and the Line Islands. It extends north to the Kansai region and to the southern regions of Japan and south to the Great Barrier Reef of Australia, New Caledonia and the Austral Islands in French Polynesia. Vagrants have been recorded from Hawaii.

📌 Biology

Its diet comprises sponges and other encrusting organisms, as well as tunicates. They form pairs. The juveniles and adults may act as cleaner fish, cleaning ectoparasites off larger fishes. When frightened, these fish can produce a knocking sound.

📌 Utilisation

The emperor angelfish is common in the aquarium trade.

Quick Facts

Common Names:

Emperor Angelfish, emperor angelfish, Emperor angelfish, Angel fish, Angelfish, Imperial angelfish, Emperor, Imperial Angelfish, Emperor Angel-fish

Class:

Actinopteri

Data Completeness:

100%

Data Sources

🌍gbif

📚itis

📖wikipedia

🔬eol

🦎inaturalist

References

All references are verified for authenticity. We prioritize peer-reviewed studies, reputable databases (iNaturalist, GBIF), and established encyclopedias.

Distribution Statistics

10

Observations

10

Countries

Top Locations

South Solitary Island, New South Wales, Australia

1

Kisite Mpunguti Marine National Park

1

North Solitary Island

1

N'Da

1

Wakatobi Reefs

1

Recent Observers

@profmollusc

@dzivulajr_03

@ralfmagee

@paulinefey

@wayneosborn

@clairegoiran

First: 5/3/2018 · Latest: 3/5/2025