HomeFish encyclopediaRay-finned fishesPuffers and FilefishesTriggerfishesOutrigger triggerfish Outrigger triggerfish (Xanthichthys caeruleolineatus) Scientific name: Xanthichthys caeruleolineatus Randall, Matsuura & Zama, 1978 The Outrigger triggerfish (Xanthichthys caeruleolineatus) is a marine fish of the family Balistidae. Native range: Indo-West Pacific, St. Brandon's Shoal (western Indian Ocean) through Indonesia to the Tuamoto Islands, north to the Ryukyus. BiologyDorsal spines (total): 3; Dorsal soft rays (total): 26-28; Anal spines: 0; Anal soft rays: 23 - 25Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameXanthichthys caeruleolineatusFamilyBalistidae (Triggerfishes)OrderTetraodontiformes (Puffers and Filefishes)ClassActinopterygii (Ray-finned fishes)Maximum length35.0Depth range15–200 m (49–656 ft)EnvironmentMarine; reef-associated; depth range 15 - 200 m, usually 50 - 200 mClimateTropicalDistributionIndo-West Pacific: St. Brandon's Shoal (western Indian Ocean) through Indonesia to the Tuamoto Islands, north to the Ryukyus.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceMedium, 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