HomeMarine aquarium fishTriggers, puffers & boxfishYellow boxfish Yellow boxfish (Ostracion cubicus) Scientific name: Ostracion cubicus Linnaeus, 1758 The Yellow boxfish (Ostracion cubicus) is a marine fish of the family Ostraciidae. BiologyDorsal spines: 0; Dorsal soft rays: 8-9; Anal spines: 0; Anal soft rays: 9. Caudal fin rays 10. Juveniles bright yellow with black spots; the spots decrease proportionately and the bright yellow becomes a dirty mustard with growth; large adults become bluish with yellowish seams between the plates.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOstracion cubicusFamilyOstraciidae (Boxfishes)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length45.0Depth range1–280 m (3–919 ft)EnvironmentMarine; reef-associated; depth range 1 - 280 m, usually 1 - 50 mClimateTropicalDistributionIndo-Pacific: Red Sea and East Africa to the Hawaiian and Tuamoto islands, north to Ryukyu Islands, south to Lord Howe Island. The Red Sea population differs slightly in coloration and has been known as Ostracion argus; closely related to Ostracion immaculatus from southern Japan. Southeast Atlantic: south coast of South Africa.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Fec assumed to be > 10,000) More triggers, puffers & boxfishWhite-banded triggerfishRhinecanthus aculeatusWhitespotted boxfishOstracion meleagrisHarlequin filefishOxymonacanthus longirostrisBlack-blotched porcupinefishDiodon liturosusValentin's sharpnose pufferCanthigaster valentiniHoneycomb tobyCanthigaster janthinopteraSee 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