Updated August 5, 2019
Author: Mike - FishLore Admin
The Koran Angelfish (Pomacanthus semicirculatus) is also sometimes called the Semicircle Angelfish (from the scientific name) and is one of the better suited marine angelfish for hobbyists because it adapts well to aquarium life. They are often kept in community type FOWLR setups but can become territorial as they mature.
They will eat most foods given but need a staple diet heavy in algae based foods, also known as nori. Live rock can provide feeding opportunities in between meals. Mysis shrimp, brine shrimp, clams on the half shell, etc. will be accepted as well. Feed them several times a day for best results.
The Koran Angelfish is being sold for around $40 to $100 depending on size. It is also interesting to note that juvenile colors are very different from the adults.
Koran Angelfish Care
Scientific Name : Pomacanthus semicirculatus
Common Names : Semicircle Angelfish, Koran Angel
Queen Angelfish Care Level : Easy to moderate - adapts well but needs a big tank.
Size : 14 inches (37 cm)
Water Parameters : standard saltwater parameters: pH 8.1 - 8.4 | Temperature 72°F - 80°F (22°C - 27°C) | SG 1.020 - 1.025 | dKH 8 - 12°
Origin / Habitat : Indo-Pacific at depths of 1 to 30 meters, found in singles or sometimes pairs near heavy coral cover.
Reef Tank Safe? No
Temperament / Behavior : Being one of the largest of their genus, introduce them last to the tank. They will adapt well and claim the tank as their own.
Breeding : This angelfish was successfully spawned in captivity in 2006.
Minimum Tank Size : 240 gallons (900 liters)
Tank Mates : It will fight with other angelfish.
Fish Disease : Saltwater Fish Disease
Diet / Foods : Feed them several times a day with foods heavy on algae. Look for a good marine angelfish food (sponges) - comes in frozen cube packs now. Author Scott Michael writes that they may even eat slime algae (cyanobacteria)!
Tank Region : All over the aquarium.
Gender : No external differences between males and females.
Forum : Saltwater Angelfish Forum
Photo Credit : Photos copyright JJPhoto.dk
Michael, S. W. (2001). Marine Fishes, 500+ Essential to Know Aquarium Species. T.F.H. Publications.
"Pomacanthus semicirculatus". FishBase. Ed. Ranier Froese and Daniel Pauly. November 2005 version.
Michael, S. W. (2004) Angelfishes and Butterflyfishes. T.F.H. Publications
More Large Saltwater Angelfish Profiles
Annularis Blue Ring Angelfish
The angelfish in Pomacanthus spp. are (generally speaking) less aggressive than the angelfish from Holacanthus spp. but use caution when stocking. It's best to keep annularis angelfish in large fish only type setups. The Blue Ring Angelfish needs lots of open swimming space and needs to be fed often.
This is one of the most expensive saltwater angelfishes to buy. Juveniles look very different than the adults and these Angels need a very high quality diet. They eat lots of sponge in the ocean.
A large angelfish that changes colors as it matures. Needs a diet with lots of marine algae. They can be fairly rugged for angels once acclimated.