HomeMarine aquarium fishBasslets, cardinalfish & hawkfishPlain cardinalfish Plain cardinalfish (Apogon atricaudus) Scientific name: Apogon atricaudus Jordan & McGregor, 1898 The Plain cardinalfish (Apogon atricaudus) is a marine fish of the family Apogonidae. Native range: Eastern Central Pacific, San Clemente Island, southern California, USA to Gulf of California and offshore islands of the eastern Pacific. BiologyFound in rocky reefs. Seeks shelter during the day. Feeds on crustaceans, mollusks and other small invertebrates. Minimum depth reported taken from.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameApogon atricaudusFamilyApogonidae (Cardinalfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length8.0Depth range9–30 m (30–98 ft)EnvironmentMarine; reef-associated; depth range 9 - 30 mClimateTropicalDistributionEastern Central Pacific: San Clemente Island, southern California, USA to Gulf of California and offshore islands of the eastern Pacific.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: of no interest; aquarium: potentialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More basslets, cardinalfish & hawkfishBanggai cardinal fishPterapogon kauderniBarspot cardinalfishApogon retrosellaBrown-marbled grouperEpinephelus fuscoguttatusLeopard coralgrouperPlectropomus leopardusRedspotted hawkfishAmblycirrhitus pinosBlack seabassCentropristis striataSee 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