Koran angelfish or semicircle angelfish, Pomacanthus semicirculatus, is a
ray-finned fish in the family Pomacanthidae. It is found in the Indo-West
The adult semicircle angelfish is a pale brownish-green color. It is a deep-bodied, laterally compressed fish that can grow to a
length of 35 centimeters (14 in).
The juveniles in contrast, are blue-black marked from top
to bottom with narrow white stripes. At the head end the stripes are fairly
straight but they become increasingly curved as they approach the base of the
tail. The juveniles gradually adopt the adult coloration when they are 8 to 16 centimeters (3.1 to 6.3 in)
Angelfish is found on sheltered coral reefs, where it feeds on algae, tunicates
and sponges. It is known to nip at clams, as well as stony and soft corals.