HomeFish encyclopediaRay-finned fishesPerch-like fishFusiliersRedbelly yellowtail fusilier Redbelly yellowtail fusilier (Caesio cuning) Scientific name: Caesio cuning Bloch, 1791 The Redbelly yellowtail fusilier (Caesio cuning) is a marine fish of the family Caesionidae. Native range: Indo-West Pacific, Sri Lanka to Vanuatu; southern Japan to northern Australia. BiologyDorsal spines (total): 10; Dorsal soft rays (total): 14-16; Anal spines: 3; Anal soft rays: 10 - 12. Deep-bodied. Scales center lighter than margins; lower 1/3 white, sometimes suffused by pink; prominent black markings on caudal fin absent. 4-5 scales on cheek; predorsal scales 20-26; scaled dorsal and anal fins. Upper peduncular scale rows 9-11; lower peduncular scale rows usually 12-14. Distinguished from C. teres in having a continuous supra-temporal band of scales across the dorsal midline. Basioccipital process for attachment of Baudelot's ligament absent. Post maxillary process single; posterior end of maxilla blunt. Color: Upper body if not yellow, grayish blue; lower sides and belly white or pinkish. Pectoral, pelvic and anal fins white to pink. Large yellow tail. Dorsal fin yellow posteriorly and grayish blue anteriorly. Length usually at 35 cm.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCaesio cuningFamilyCaesionidae (Fusiliers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length60.0Depth range60 m (197 ft)EnvironmentMarine; reef-associated; non-migratory; depth range ? - 60 mClimateTropicalDistributionIndo-West Pacific: Sri Lanka to Vanuatu; southern Japan to northern Australia.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