HomeFish encyclopediaRay-finned fishesPerch-like fishCardinalfishesHalf-barred cardinal Half-barred cardinal (Apogon thermalis) Scientific name: Apogon thermalis Cuvier, 1829 The Half-barred cardinal (Apogon thermalis) is a marine fish of the family Apogonidae. Native range: Indo-Pacific, south to Natal, South Africa and east to western Pacific. BiologyDorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 8. Black stripe from snout through eye to angle of opercle; tip of 1st dorsal present; caudal spot present. Sometimes has yellow barring on sides.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameApogon thermalisFamilyApogonidae (Cardinalfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length8.0Depth range20 m (66 ft)EnvironmentMarine; reef-associated; non-migratory; depth range ? - 20 mClimateTropicalDistributionIndo-Pacific: south to Natal, South Africa and east to western Pacific.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; aquarium: commercialResilienceHigh, 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