HomeFish encyclopediaRay-finned fishesPuffers and FilefishesFilefishesLarge-scaled leatherjacket Large-scaled leatherjacket (Cantheschenia grandisquamis) Scientific name: Cantheschenia grandisquamis Hutchins, 1977 The Large-scaled leatherjacket (Cantheschenia grandisquamis) is a marine fish of the family Monacanthidae. Native range: Western Pacific, Capricorn Group to New South Wales, Australia. BiologyDorsal soft rays (total): 39; Anal soft rays: 36; Vertebrae: 19. Diagnosis: Relatively large scales on side of body with prominent outlines forming a reticulate pattern, each scale with many small spinules arranged in series radiating from a slightly larger central spinule. Soft dorsal rays 39, anal rays 36, pectoral rays 13. Color pattern consists of a dark brown to yellowish brown background with a patch of iridescent blue spots on side of throat and breast; a similarly colored line along basal sheath of both soft dorsal and anal fins, and upper and lower 4 rays of caudal fin dark blue, with a black bar along posterior margin, the remainder of fin yellow-orange.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCantheschenia grandisquamisFamilyMonacanthidae (Filefishes)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length26.0Depth range29 m (95 ft)EnvironmentMarine; reef-associated; depth range 29 - 29 mClimateTemperateDistributionWestern Pacific: Capricorn Group to New South Wales, Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, 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