Reef to Rainforest: Discovering Tropical Species, Places, Nature

Koran Angelfish

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Pomacanthus semicirculatus - (Cuvier, 1831)
Koran Angelfish

A rugged species and a favorite of aquarists who have kept it. Scott W. Michael

[edit] Overview

This is a survivor species, a regal but rugged aquarium fish that typically does well in larger home systems. This fish exhibits great color transformations as it grows. Juveniles are dark overall with white and bright-blue lines, while adults have a curving band of bright scales and hot-blue highlights.

Family: Pomacanthidae

Other common name(s):

  • Semicircle Angelfish
  • Halfcircled Angelfish

Native range:

Habitat: Reef. Provide ample open swimming space and several bolt holes in which shelter is readily available.

Maximum length: 35 cm (14 in)

Minimum aquarium size: 513 L (136 gal)

Water: Marine 24 °C (297 K, 75 °F) - 28 °C (301 K, 82 °F)

General swimming level: All levels.

[edit] Feeding

Omnivore. Feed meaty and algae-based foods several times a day. Will benefit from occasional meals of sponge-containing angelfish rations.

[edit] Aquarium Compatibility

As a juvenile, it is relatively shy and will spend much of its time peering from a cave or crevice.
Pomacanthus semicirculatus juvenile.
Pomacanthus semicirculatus subadult.

As it increases in size, so too will its bravado ramp up in proportion. Adults tend to be very confident and smart and make wonderful pets.

[edit] Breeding/Propagation

Egg scatterers that produce pelagic eggs, often in midwater mating rituals. Both eggs and larvae that drift with plankton in the water column and settle back onto a reef at about the time of metamorphosis. These are among the most challenging types of marine fishes to propagate in captivity.

[edit] Notes

Keep one per tank, as they will fight. Juveniles will battle with any other angels having similar coloration. It can be quite cantankerous in a smaller tank. For this reason, it is a good idea not to house it with mild-mannered fishes or at least add the angel to the tank last. It is less likely to harm its neighbors if housed in a ­larger tank provided with many hiding places. Like other sizable angels, it is a potential threat to corals, especially as it becomes ­larger.

Reference: 101 Best Saltwater Fishes
Image credit: SWM
Text credit: SWM
Facts about Koran AngelfishRDF feed
Common name Koran Angelfish  +, Semicircle Angelfish  +, and Halfcircled Angelfish  +
Family Pomacanthidae  +
Genus Pomacanthus  +
Image credit SWM  +
Maximum length 14 in  +
Minimum aquarium size 136 gal  +
Native range Indo-West Pacific  +
Reference 101 Best Saltwater Fishes  +
Specific name semicirculatus  +
Swimming level All levels.  +
Text credit SWM  +
Water max temp 301 K (28 °C, 82 °F)  +
Water min temp 297 K (24 °C, 75 °F)  +
Water type Marine  +