The Koran Angelfish, also referred to as the Semicircular Angelfish or Half-circled Angelfish, is an extremely popular and hardy angelfish. The beautiful Koran Angel fish in this photo came directly out of the Sea of Cortez.

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.

If kept as a pet, 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 and clam mantles so it is not a good candidate for a reef aquarium.

The Koran Angelfish is also commonly known as Koran Angel, Blue Koran Angel, Semicircle Angel, Half-circle Angel. The juvenile Koran Angel fish has a bluish-black body blended with concentric semi-circles.

It is aggressive towards other similar genus species, other angelfish, and its own species, therefore we suggest you to keep them singly or if you still want to keep it in group it is advisable to keep them in a large and cleverly decorated aquarium. The Koran Angelfish is an omnivore and feeds mainly on sponges, crustaceans, and algae.

More Info: en.wikipedia.org