HomeMarine aquarium fishTriggers, puffers & boxfishBristle-tail file-fish Bristle-tail file-fish (Acreichthys tomentosus) Scientific name: Acreichthys tomentosus Linnaeus, 1758 The Bristle-tail file-fish (Acreichthys tomentosus) is a marine fish of the family Monacanthidae. Native range: Indo-West Pacific, East Africa to Fiji, north to the Ryukyu Islands, south to New South Wales (Australia). Recently recorded from Tonga. BiologyDorsal soft rays (total): 27-30; Anal spines: 0; Anal soft rays: 26 - 29Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAcreichthys tomentosusFamilyMonacanthidae (Filefishes)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Depth range2–15 m (7–49 ft)EnvironmentMarine; reef-associated; non-migratory; depth range 2 - 15 mClimateTropicalDistributionIndo-West Pacific: East Africa to Fiji, north to the Ryukyu Islands, south to New South Wales (Australia). Recently recorded from Tonga.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (K=0.86;) More triggers, puffers & boxfishWhite-banded triggerfishRhinecanthus aculeatusCrowned pufferCanthigaster coronataHawaiian whitespotted tobyCanthigaster jactatorSpider-eye pufferCanthigaster amboinensisWhitley's boxOstracion whitleyiThornback cowfishLactoria fornasiniSee all triggers, puffers & boxfish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026