HomeMarine aquarium fishAngelfish & butterflyfishSingular bannerfish Singular bannerfish (Heniochus singularius) Scientific name: Heniochus singularius Smith & Radcliffe, 1911 The Singular bannerfish (Heniochus singularius) is a marine fish of the family Chaetodontidae. Native range: Pacific Ocean, Andaman Islands in the eastern Indian Ocean to Samoa, north to southern Japan, south to Rowley Shoals and New Caledonia. BiologyDorsal spines (total): 11 - 12; Dorsal soft rays (total): 25-27; Anal spines: 3; Anal soft rays: 17 - 18. Juveniles closely resemble juvenile H. monoceros and H. acuminatus. The white ring around the mouth, the black instead of the yellow caudal fin and the complete ocular band distinguishes it from H. acuminatus at all sizes. Adults have black-centered scales in the main white band, juveniles have long banners. Has mostly black face.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHeniochus singulariusFamilyChaetodontidae (Butterflyfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length30.0Depth range2–40 m (7–131 ft)EnvironmentMarine; reef-associated; depth range 2 - 40 m, usually 15 - 40 mClimateTropicalDistributionPacific Ocean: Andaman Islands in the eastern Indian Ocean to Samoa, north to southern Japan, south to Rowley Shoals and New Caledonia.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: minor commercial; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More angelfish & butterflyfishPajama cardinalfishSphaeramia nematopteraHorned bannerfishHeniochus variusMasked bannerfishHeniochus monocerosThreeband pennantfishHeniochus chrysostomusThompson's butterflyfishHemitaurichthys thompsoniPyramid butterflyfishHemitaurichthys polylepisSee all angelfish & butterflyfish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026