HomeFish encyclopediaRay-finned fishesSilversidesSilversidesTropical silverside Tropical silverside (Atherinomorus duodecimalis) Scientific name: Atherinomorus duodecimalis Valenciennes, 1835 The Tropical silverside (Atherinomorus duodecimalis) is a brackish-water fish of the family Atherinidae. Native range: Indo-West Pacific, Aldabra, Comoros and Madagascar to the Solomon Islands, north to the Philippines and the Caroline Islands, south to New Caledonia. BiologyDorsal spines (total): 5 - 7; Dorsal soft rays (total): 9-10; Anal spines: 1; Anal soft rays: 12 - 13. The distal end of upper jaw extending slightly backward beyond vertical through anterior border of orbit. The anus is 2 to 4 scales in front of the pelvic fin tips, rarely more than 3 scales.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAtherinomorus duodecimalisFamilyAtherinidae (Silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length11.0EnvironmentMarine; brackish; reef-associated; oceanodromousClimateTropicalDistributionIndo-West Pacific: Aldabra, Comoros and Madagascar to the Solomon Islands, north to the Philippines and the Caroline Islands, south to New Caledonia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest; bait: occasionallyResilienceHigh, 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