Koran Angelfish

The Koran Angelfish, also referred to as the Semicircular Angelfish or Halfcircled Angelfish, is an extremely popular and hardy angelfish. As an adult, the body color is a yellow-green that bleeds from light to dark moving front to back along the body. Lighter areas are speckled-blue while darker areas have a more yellow-speckled appearance. The head is a plain yellow-green with sapphire-blue gill margins and eye rings. The fins are also outlined in sapphire blue. The juvenile is black with white and blue stripes.

The Koran Angelfish requires a 250 gallon or larger tank with large amounts of live rock for hiding and grazing upon slime algae and cyanobacteria. It is prone to nip at stony and soft corals (sessile invertebrates) and clam mantles so it is not a good candidate for a reef aquarium.


This was once a very rare Angelfish to the hobby and has recently become available. Little is known about the reproductive behaviors of this fish.

A varied diet of Spirulina, marine algae, high-quality angelfish preparations, and mysis or frozen shrimp should be offered at least three times a day.

Minimum Tank Size: 946 Litres
Care Level: Moderate
Temperament: Semi-aggressive
Reef Compatible: No
Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.020-1.025
Max. Size: 1' 3"
Colour Form: Black, Blue, Orange, White, Yellow
Diet: Omnivore
Family: Pomacanthidae
Origin: Africa, Caribbean, Indonesia, Maldives, Sri Lanka

Find out where you can buy a Koran Angelfish near you

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Easy to Care For
Easy to Feed
Peaceful with Others
Reef Safe
Invertebrate Safe

  1. I ordered a medium Koran and after 5 hours of slow acclimation I was amazed at the beauty of this fish. The colors are so vibrant and it started eating within 24 hours.

  2. Will nip at sessile invertebrates, including stony and soft corals, sponges, and tridacnid clam mantles for sure! For some reason seems OK with my mushrooms though

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