HomeFish encyclopediaRay-finned fishesFlatfishesSolesAnnular sole Annular sole (Brachirus annularis) Scientific name: Brachirus annularis Fowler, 1934 The Annular sole (Brachirus annularis) is a marine fish of the family Soleidae. Native range: Indo-West Pacific, northwestern Australia and Japan. BiologyDorsal soft rays (total): 70; Anal soft rays: 57; Vertebrae: 43. Elongated sole with distinct, dark brown annular patches on ocular side of the body. Body depth more than 2.5 SL. Pectoral fins small, with unbranched rays. Divergent groove scales below lateral line 4-7. All fins brownish, black on tips.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBrachirus annularisFamilySoleidae (Soles)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length13.0Depth range271 m (889 ft)EnvironmentMarine; demersal; depth range 271 - 271 mClimateTropicalDistributionIndo-West Pacific: northwestern Australia and Japan.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026