HomeFish encyclopediaRay-finned fishesPuffers and FilefishesFilefishesMosaic leatherjacket Mosaic leatherjacket (Eubalichthys mosaicus) Scientific name: Eubalichthys mosaicus Ramsay & Ogilby, 1886 The Mosaic leatherjacket (Eubalichthys mosaicus) is a marine fish of the family Monacanthidae. Native range: Eastern Indian Ocean, southern Australia, from southern Western Australia to New South Wales and Tasmania. BiologyAdults are found on deep offshore reefs down to about 140 m, while juveniles occur in estuaries and on coastal reefs.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEubalichthys mosaicusFamilyMonacanthidae (Filefishes)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length60.0Depth range140 m (459 ft)EnvironmentMarine; reef-associated; depth range ? - 140 mClimateTemperateDistributionEastern Indian Ocean: southern Australia, from southern Western Australia to New South Wales and Tasmania.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 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