HomeFish encyclopediaRay-finned fishesPerch-like fishSmelt-whitingsIntermediate sillago Intermediate sillago (Sillago intermedius) Scientific name: Sillago intermedius Wongratana, 1977 The Intermediate sillago (Sillago intermedius) is a marine fish of the family Sillaginidae. Native range: Eastern Indian Ocean, India and Thailand. Sillago intermedius is similar to Sillago sihama. BiologyDorsal spines (total): 12; Dorsal soft rays (total): 21-22; Anal spines: 2; Anal soft rays: 21 - 22; Vertebrae: 34. Swim bladder with two posterior extensions; anterior margin with two divergent blind tubes that extend to the basioccipital above the auditory capsule; an anterolateral extension on each side, each sending a blind tubule anteriorly and then recurving posteriorly along the abdominal wall as a simple tube to terminate just posterior to the duct-like process.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSillago intermediusFamilySillaginidae (Smelt-whitings)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Common length20.0Depth range0–10 m (0–33 ft)EnvironmentMarine; demersal; non-migratory; depth range 0 - 10 mClimateTropicalDistributionEastern Indian Ocean: India and Thailand. Sillago intermedius is similar to Sillago sihama.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: subsistence fisheriesResilienceHigh, 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