| Koran Angelfish or Pomacanthus semicirculatusbelong | | | | is marketed by the aquarium industry under the |
| to the family Pomacanthidae.This species is endemic | | | | following names; Koran Angel, Blue Koran Angel, |
| to the Indo-Pacific and the Rea Sea as far east as | | | | Half-circle Angel, Half-circled Angel and Semicircle |
| Samoa. Their geographical range stretches from | | | | Angel. |
| Japan down the entire east coast of Africa to | | | | These fish will grow to a maximum adult length of 16 |
| Western Australia and New South Wales. These are | | | | inches. Because of their size they will require a large |
| reef fish occupying depths from 3-100 feet. | | | | aquarium. A minimum tank size of 135 gallons is |
| One of the common traits among large angelfish is | | | | recommended. A well populated multi-species tank |
| the dramatic transitional color change between the | | | | should be considerably larger. This fish has a |
| juvenile and adult phases of their lives. It is simply | | | | semi-aggressive temperament. It may bully smaller |
| amazing watching a juvenile's gradual metamorphosis | | | | fish. It will for the most part ignore other larger |
| into its adult color palette. Korans undergo three | | | | species. It will, however, display major territorial |
| distinctive stages on the sojourn to adulthood. The | | | | behavior toward conspecifics and other angels. It is |
| Greek word semicirculatus refers to the initial phase | | | | advisable to only keep a single large angle fish of any |
| of their life. Baby Korans have black bodies with blue | | | | species in an aquarium. Many species of large angles |
| and white striping that expands concentrically | | | | carry an expert care level. Korans are rated |
| forward from the base of their tails. This patterning | | | | moderate. A healthy Koran may live 15-20 years. |
| very much resembles ½ of the ripples on a still | | | | Korans are omnivorous. In nature their diet consists |
| pond when a pebble is suddenly dropped into it. A | | | | of a mixture of corals, algae, sponges, worms, |
| baby Koran could easily be mistaken for a juvenile | | | | mollusks and crustaceans. Their dietary habits make |
| emperor angelfish. Closer examination reveals that | | | | them unsuitable for a marine reef aquarium. They will, |
| Koran's have wider stripes and fewer of them. When | | | | however require a large enough of assortment of live |
| these fish reach about 3 inches in length the | | | | rock for a fish of their proportions. Having a food |
| semicircular markings slowly straighten into sweeping | | | | source they are already accustomed to will aid in the |
| lines. | | | | acclimation process. You can begin training them to |
| At roughly five inches in length the fish begins to | | | | recognize aquarium fare as an acceptable food |
| exhibit patterning between the blue lines on the tail | | | | source by mixing increasing amounts with live food |
| fin that resembles Arabic script, hence the name | | | | offerings such as brine shrimp. This is the best |
| Koran angelfish. They exhibit a combination of | | | | technique for weaning them off live food. Make sure |
| juvenile and adult coloration. This marks the | | | | to choose a high quality food product formulated for |
| conclusion of stage two. At approximately two years | | | | marine angelfish. Once they are successfully weaned, |
| of age and between 6-7 inches in length this species | | | | their diet can be supplemented with the following; |
| morphs into its adult color palette. Adults are typically | | | | chopped fresh crustaceans and mollusks for protein, |
| a yellowish green in color with varying amounts of | | | | table vegetables such as chopped spinach, zucchini |
| blue or browns spotting on their bodies and caudal fin. | | | | and yellow squash for plant matter, frozen or dried |
| Their heads may be blue or their primary body | | | | algae such as algae sheets to insure a well balanced |
| coloring. Gills and fins are outlined in blue. This species | | | | diet. |