HomeFish encyclopediaRay-finned fishesPerch-like fishSmelt-whitingsBoutan's sillago Boutan's sillago (Sillago boutani) Scientific name: Sillago boutani Pellegrin, 1905 The Boutan's sillago (Sillago boutani) is a marine fish of the family Sillaginidae. Native range: Northwest Pacific, Gulf of Tonkin and China. This species is rare in collections, and may be misidentified as Sillago sihama. BiologyDorsal spines (total): 12; Dorsal soft rays (total): 21; Anal spines: 2; Anal soft rays: 21 - 22; Vertebrae: 38. Body is olive-yellow dorsally, becoming paler on the sides and abdomen. The cheeks and part of the operculum orange-yellow; the fins uniformly grayish, with some indication of dots on the rays of the second dorsal fin. One or two yellow-orange stripes run along the sides of the body.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSillago boutaniFamilySillaginidae (Smelt-whitings)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Depth range20 m (66 ft)EnvironmentMarine; demersal; non-migratory; depth range ? - 20 mClimateSubtropicalDistributionNorthwest Pacific: Gulf of Tonkin and China. This species is rare in collections, and may be misidentified as Sillago sihama.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceHigh, 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