Blue Angelfish

Pomacanthus Semicirculatus
Blue Angelfish - Marinewise © 2024 MarineWise

Quick Facts

Scientific name Pomacanthus Semicirculatus
Other names Blue Angel, Half-circled Angelfish, Koran Angelfish, Semicircle Angelfish, Zebra Angelfish
Size Up to 40 cm (15 in)
Weight Under a kilo (2.2lb)


Habitat & AU Distribution Clear lagoons, reefs, and surge channels.
Depth Range
Blue Angelfish Distribution Australia

Interesting Info

  • The Blue Angelfish are a semi-aggressive fish and are generally solitary but can be found in pairs. Young fish stay in the shallows whilst adults can be found in up to 40 m (130 ft).
  • Blue Angelfish like many other angelfish are broadcast spawners, releasing their eggs and sperm towards the top of the water column or surface at dusk. The fertilised eggs then float with the current and eventually settle on the bottom.
  • Juveniles appear very different to adults, with dark blue and black colours highlighted by curved/circular light blue and white lines. They are often confused for juvenile Emperor Angelfish. The change in juvenile colours to adults starts when the fish reach the length of 8 to 16 cm (3.1 to 6.3 in).
  • These fish are omnivores and primarily feed on algae and sponges, but also eat small invertebrates, zooplankton and plants.
  • Estimates on lifespan have them reaching up to 21 years of age.
  • The main predators of angelfish include sharks, larger predatory fish and marine mammals.
Species Interaction

Aquarium & Reef

The Blue Angelfish also known as the Koran Angelfish is a popular reef species known for its unique colours and hardiness as an aquarium fish. Juvenile fish typically stay in the shallows of inner reefs and lagoons whilst adults can be found on the outer reef in caves or crevices.

The fish has a large range across the tropical Indo-West Pacific Ocean, to the Red Sea, Australia and as far north as Japan.

Scientific Classification

Kingdom: Animalia

Phylum: Chordata

Class: Actinopterygii

Order: Perciformes

Family: Pomacanthidae

Genus: Pomacanthus

Species: Pomacanthus semicirculatus

Conservation Status

Based on the International Union for Conservation of Nature (IUCN), the Blue Angelfish is currently categorised as “Least Concern”(LC).

LC is the lowest category on the scale for risk with “Extinct”(EX) being the highest.

Fish Taste Quality

Blue Angelfish are a edible fish but are not a targeted species for consumption.

Taste Rating: 0/5

How to catch
Blue Angelfish

Catch Difficulty: Easy

Tackle: Running Sinker Rig

Bait: Sponge, Weed, Worms

Popularity: Not targeted

Blue Angelfish
As Aquarium Fish

Care Level: Easy to moderate

Temperament: Semi-Aggressive

Diet: Omnivore

Reef Compatible: Yes

Minimum Tank Size: 220 gallons