HomeFish encyclopediaRay-finned fishesPerch-like fishCardinalfishesLongspine cardinalfish Longspine cardinalfish (Apogon doryssa) Scientific name: Apogon doryssa Jordan & Seale, 1906 The Longspine cardinalfish (Apogon doryssa) is a marine fish of the family Apogonidae. Native range: Indo-Pacific, Rodriquez; then Christmas Island in the eastern Indian Ocean to the Tuamoto Islands, north to Ryukyu Islands, south to Rapa. BiologyDorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 8. Second spine in first dorsal fin thick and tall, almost reaching end of second dorsal fin base, when folded down.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameApogon doryssaFamilyApogonidae (Cardinalfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length8.0Common length4.0Depth range4–15 m (13–49 ft)EnvironmentMarine; reef-associated; depth range 4 - 15 mClimateTropicalDistributionIndo-Pacific: Rodriquez; then Christmas Island in the eastern Indian Ocean to the Tuamoto Islands, north to Ryukyu Islands, south to Rapa.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