Koran Angelfish, also known by its scientific name Pomacanthus semicirculatus, is a type of marine fish with ray-like fins.
It belongs to the Pomacanthidae family of marine angelfish and is sometimes called the Semicircle Angelfish, Blue Angelfish, Zebra Angelfish, or Half-Circled Angelfish.
This fish is found in the Indo-West Pacific Ocean and is sometimes kept in aquariums.
Young koran angelfish live in shallow, protected areas, while adults prefer coastal reefs with lots of coral growth, which provides plenty of hiding places.
They are usually found alone or in pairs and feed on sponges, tunicates (sea squirts), and algae.
Although young koran angelfish make excellent aquarium fish and can live in community tanks, they are not considered reef safe.
This means they may not be suitable for a reef aquarium, as they could potentially harm the corals or other inhabitants.
Koran Angelfish Interesting Facts
- Koran angelfish is also known as the semicircle, blue, zebra, or half-circled angelfish.
- They are found in the Indo-West Pacific Ocean and prefer shallow protected areas when young and coastal reefs with heavy coral growth when adults.
- They feed on sponges, tunicates, and algae.
- While young koran angelfish make excellent community aquarium fish, adults are not reef safe.
Koran Angelfish Habitat
Koran angelfish is found in the Indo-West Pacific region.
It lives in areas ranging from the Red Sea and East Africa to Samoa, as far north as southern Japan, and as far south as Western Australia and New South Wales, including Lord Howe Island.
These fish live in marine environments and are closely associated with reefs.
They don’t migrate and can be found at depths of 1 to 40 meters (3 to 131 feet).
The koran angelfish thrives in tropical waters, specifically within the coordinates of 30°N – 30°S latitude.
| Water Temperature: | Unknown |
| Water pH: | Unknown |
| Water Hardness: | Unknown |
Koran Angelfish Physical Characteristics
Size: 15.7 inches (40.0 centimeters)
Koran angelfish can grow up to a maximum length of 40.0 cm (about 15.7 inches).
This fish has 13 dorsal spines (rigid, pointy parts on its back), 20 to 23 dorsal soft rays (flexible parts on its back), 3 anal spines (rigid, pointy parts near its rear), and 18 to 22 anal soft rays (flexible parts near its rear).
Young koran angelfish are bluish-black with white concentric semi-circles. As they grow into adults, their color changes.
The front and back thirds of their body become brownish, while the middle part turns greenish or yellowish.
They also develop blue spots on their sides. The back part of their dorsal and anal fins extend into a filament with bright yellow tips.
This transformation in color pattern happens when this fish is about 8 to 16 cm (3.1 to 6.3 inches) long.
The body depth of koran angelfish is 1.6 to 1.9 times smaller than its length. It has 65 to 70 scales arranged in a longitudinal series along its body.
Koran Angelfish Scientific Classification
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Pomacanthidae |
| Genus: | Pomacanthus |
| Scientific Name: | Pomacanthus semicirculatus |
| Also Known As: | Semicircle Angelfish, Blue Angelfish, Zebra Angelfish, Half-Circled Angelfish |
| Conservation Status: | Least Concern |