Juveniles inhabit shallow protected areas, while adults prefer coastal reefs with heavy coral growth providing ample hiding places. Generally solitary or in pairs. Feeds on sponges, tunicates, and algae . The young are excellent aquarium fish and suitable for a community tank.
Dorsal spines (total): 13; Dorsal soft rays (total): 20 - 23; Anal spines: 3; Anal soft rays: 18 - 22. : short and / or deep; Cross section: compressed.
Behavioural data for Semicircle angelfish is currently being reviewed.
Diet information for Semicircle angelfish is currently being compiled.
Reproduction data for Semicircle angelfish is currently being compiled.
Marine; reef-associated; non-migratory; depth range 1 - 40 m . Tropical; 30°N - 30°S West Pacific: Red Sea and East Africa to Samoa, north to southern Japan, south to Western Australia and New South Wales, including Lord Howe Island (Ref.
sponges, tunicates, and algae (Ref
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Holacanthus alternans | Cuvier | 1831 | Synonym |
| Holacanthus alternans meleagris | Alcock | 1896 | Synonym |
| Holacanthus lepidolepis | Bleeker | 1853 | Synonym |
| Holacanthus poecilus | Peters | 1868 | Synonym |
| Holacanthus reginae | Sauvage | 1891 | Synonym |
| Holacanthus semicirculatus | Cuvier | 1831 | Synonym |
| Pomacanthops alternans | Cuv. | 1831 | Synonym |
| Pomacanthops caeruleus | Ehren) Cuv. | 1831 | Synonym |
| Pomacanthops ignatius | Playfair | 1867 | Synonym |
| Pomacanthops lasti | von Bonde | 1934 | Synonym |
| Pomacanthops poecilus | Peters | 1868 | Synonym |
| Pomacanthops reginae | Lienard) Sauvage | 1891 | Synonym |
| Pomacanthops semicirculatus | Cuvier | 1831 | Synonym |
| Pomacanthus semicircularis | Cuvier | 1831 | Synonym |
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 26 records indexed .
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