HomeFish encyclopediaRay-finned fishesPuffers and FilefishesFilefishesRhinoceros leatherjacket Rhinoceros leatherjacket (Pseudalutarius nasicornis) Scientific name: Pseudalutarius nasicornis Temminck & Schlegel, 1850 The Rhinoceros leatherjacket (Pseudalutarius nasicornis) is a marine fish of the family Monacanthidae. BiologyDorsal spines (total): 2; Dorsal soft rays (total): 43-50; Anal spines: 0; Anal soft rays: 41 - 46. Pale brown to grey in color; two brown stripes on body; adults with yellow spots on head and body; soft dorsal and anal fins yellowish; caudal fin dark brown.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudalutarius nasicornisFamilyMonacanthidae (Filefishes)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length19.0Depth range1–55 m (3–180 ft)EnvironmentMarine; reef-associated; depth range 1 - 55 mClimateSubtropicalDistributionIndo-West Pacific: tropical and subtropical waters, South Africa eastward through Indonesia; northward to southern Japan; southward to the east coast of Australia. Southeast Atlantic: south coast of South Africa.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