HomeFish encyclopediaRay-finned fishesPuffers and FilefishesTriggerfishesHalfmoon picassofish Halfmoon picassofish (Rhinecanthus lunula) Scientific name: Rhinecanthus lunula Randall & Steene, 1983 The Halfmoon picassofish (Rhinecanthus lunula) is a marine fish of the family Balistidae. Native range: Pacific Ocean, Queensland, Australia to the Pitcairn Group. Species factsScientific nameRhinecanthus lunulaFamilyBalistidae (Triggerfishes)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length28.0Depth range10 m (33 ft)EnvironmentMarine; reef-associated; depth range 10 - ? mClimateSubtropicalDistributionPacific Ocean: Queensland, Australia to the Pitcairn Group.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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