HomeFish encyclopediaRay-finned fishesPuffers and FilefishesFilefishesSpotted filefish Spotted filefish (Thamnaconus fajardoi) Scientific name: Thamnaconus fajardoi Smith, 1953 The Spotted filefish (Thamnaconus fajardoi) is a marine fish of the family Monacanthidae. Native range: Western Indian Ocean, southern Mozambique Channel, Madagascar, Reunion, and Mauritius. BiologyDorsal spines (total): 2; Dorsal soft rays (total): 32-34; Anal spines: 0; Anal soft rays: 31 - 33. Pale brown; 2 dark bars across forehead.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameThamnaconus fajardoiFamilyMonacanthidae (Filefishes)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length22.0Depth range130–150 m (427–492 ft)EnvironmentMarine; demersal; depth range 130 - 150 mClimateDeep-waterDistributionWestern Indian Ocean: southern Mozambique Channel, Madagascar, Reunion, and Mauritius.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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