
Source: Wikimedia Commons
Pomacanthus semicirculatus
A large angel whose juveniles are black with curved white and blue lines and whose adults are yellow-green to brown speckled with blue. Up to 40cm. Hardy and quick to feed, one of the easier large angels, but needs a big tank and nips corals.
The Koran Angelfish (Pomacanthus semicirculatus) is a large angelfish found in the Indo-West Pacific from the Red Sea and East Africa to Samoa, north to southern Japan and south to Western Australia, New South Wales and Lord Howe Island. It reaches 40cm standard length. Juveniles are black with many narrow curved white and blue lines, nearly straight on the head and increasingly curved toward the tail. Adult colouring develops at 8-16cm total length: a yellow-green to brown body speckled blue by the scale edges, a plain head with blue gill margins and eye rings, and blue-edged fins. It lives on coral-rich coastal reefs at 1-40m, juveniles preferring shallow sheltered spots, and feeds on algae, tunicates and sponges. In captivity provide 950L or more with plenty of live rock for grazing algae and cyanobacteria. Hardy and quick to feed, it is one of the easier large angels, but it nips stony and soft corals and clams and is not suited to reef tanks. Feed spirulina, marine algae, angelfish preparations and frozen shrimp at least three times daily.
Source: Wikipedia (CC BY-SA 4.0)
The Koran Angelfish lives 10-20 years.
The Koran Angelfish grows to Up to about 40cm SL.
The ideal temperature for the Koran Angelfish is 22〜26℃.
Origin
Indo-West Pacific (Red Sea and East Africa to Samoa, southern Japan to Australia and Lord Howe Island)
Sources: LiveAquaria / FishBase
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Sources: CITES Appendices (species not listed) / IUCN Red List
Regulations may change. Always verify the latest information with the relevant authorities.
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Lifespan
10-20 years
Size
Up to about 40cm SL
Temperature
22〜26℃
Spirulina and marine algae, angelfish pellets, frozen mysis and shrimp
Even a juvenile grows to 40cm; plan for a very large tank from the outset.
950L or larger with plenty of live rock for hiding and grazing.
22-26C, pH 8.1-8.4, SG 1.020-1.025. A big fish that needs strong filtration.
Feed spirulina, marine algae, angelfish preparations and frozen shrimp at least three times daily.
Nips stony and soft corals and clams; not for reef tanks. Avoid other large angels.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Koran Angelfish is 22〜26℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Koran Angelfish is 10-20 years. With proper care and nutrition, they can live a long and healthy life.
Koran Angelfish typically reaches Up to about 40cm SL as an adult. Size may vary depending on care conditions and individual genetics.
Koran Angelfish feeds on: Spirulina and marine algae, angelfish pellets, frozen mysis and shrimp. Aim for a balanced diet with appropriate feeding frequency.
The price of Koran Angelfish varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 17, 2026