Koran Angelfish Care Guide
Pomacanthus semicirculatus · Saltwater Angelfish
What Koran Angelfish look like
The Koran Angelfish (Pomacanthus semicirculatus) exhibits a strikingly vibrant coloration, characterized by a deep blue body adorned with concentric yellow and blue lines that form a semi-circular pattern, particularly prominent in juveniles. Adults can reach a maximum size of approximately 15 inches (38 cm) in length. Sexual dimorphism is subtle, with males typically displaying slightly larger dorsal fins and more intense coloration compared to females. This species possesses a robust, laterally compressed body, a pronounced forehead, and a distinctive, elongated dorsal fin that extends into a filamentous extension in mature individuals. Defensive adaptations include the presence of sharp spines on the operculum and a strong, muscular build, allowing for rapid escapes from predators. The Koran Angelfish also features a unique dentition, with specialized teeth adapted for grazing on algae and coral polyps.
Behavior & temperament
Koran Angelfish are generally solitary or found in pairs, exhibiting a hierarchical social structure where dominant individuals establish territories within their habitat. They are primarily mid-water swimmers, often seen hovering around coral formations. Breeding behavior involves the formation of temporary pairs during spawning events, where both male and female release gametes into the water column. Their temperament can range from semi-aggressive to territorial, particularly during breeding seasons, and they may display aggressive behaviors towards intruders or other angelfish species. This species is known for its inquisitive nature, often exploring its environment and interacting with divers.
Diet & feeding
In the wild, Koran Angelfish are primarily herbivorous, feeding on algae, coral polyps, and other sessile invertebrates. In captivity, they require a varied diet that includes high-quality marine algae, spirulina, and specially formulated angelfish pellets to ensure optimal health.
Behind the name
The genus name 'Pomacanthus' derives from the Greek words 'poma' meaning 'cover' and 'akantha' meaning 'thorn', referring to the spiny covering of the fish. The species name 'semicirculatus' comes from Latin, meaning 'half-circle', which describes the distinctive pattern on the fish's body.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Koran Angelfish?
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