HomeMarine aquarium fishBasslets, cardinalfish & hawkfishRed-bar anthias Red-bar anthias (Pseudanthias cooperi) Scientific name: Pseudanthias cooperi Regan, 1902 The Red-bar anthias (Pseudanthias cooperi) is a marine fish of the family Serranidae. In the aquarium it needs water at 22–27°C (72–81°F). Native range: Indo-Pacific, East Africa to Samoa and the Line Islands, north to southern Japan, south to the Great Barrier Reef. Red-bar anthias care at a glanceTemperature22–27°C (72–81°F) BiologyDorsal spines (total): 10; Dorsal soft rays (total): 15-17; Anal spines: 3; Anal soft rays: 7 - 8. Males develop an incomplete crimson bar in the middle of their sides.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudanthias cooperiFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length14.0Common length12.0Depth range10–91 m (33–299 ft)EnvironmentMarine; reef-associated; depth range 10 - 91 m, usually 10 - 60 mClimateTropicalDistributionIndo-Pacific: East Africa to Samoa and the Line Islands, north to southern Japan, south to the Great Barrier Reef.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: public aquariumsResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More basslets, cardinalfish & hawkfishBanggai cardinal fishPterapogon kauderniIndigo hamletHypoplectrus indigoBarred hamletHypoplectrus puellaTwo-spot bassletPseudanthias bimaculatusPainted anthiasPseudanthias pictilisTimor cardinalfishApogonichthyoides timorensisSee all basslets, cardinalfish & hawkfish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026