HomeMarine aquarium fishOther marine fishCardinal soldierfish Cardinal soldierfish (Plectrypops retrospinis) Scientific name: Plectrypops retrospinis Guichenot, 1853 The Cardinal soldierfish (Plectrypops retrospinis) is a marine fish of the family Holocentridae. Native range: Western Atlantic, Bermuda, southern Florida (USA), and the Bahamas to northern South America. BiologyDorsal spines (total): 12; Dorsal soft rays (total): 14; Anal spines: 4; Anal soft rays: 11. Small, chunky squirrelfish without a preopercular spine. Circumorbital bones have slender spines, those below eye forward-pointing. Body brilliant orangish red, fins somewhat paler. Spines near angle of preopercle somewhat enlarged. Soft dorsal, caudal and anal fins unscaled, their lobes broadly rounded.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlectrypops retrospinisFamilyHolocentridae (Squirrelfishes, soldierfishes)OrderBeryciformes (Sawbellies)ClassActinopterygii (Ray-finned fishes)Maximum length15.0Depth range22 m (72 ft)EnvironmentMarine; reef-associated; depth range ? - 22 mClimateTropicalDistributionWestern Atlantic: Bermuda, southern Florida (USA), and the Bahamas to northern South America.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More other marine fishTube-snoutAulorhynchus flavidusLongnose killifishFundulus similisRed brotulaBrosmophycis marginataPollackPollachius pollachiusShortnose batfishOgcocephalus nasutusOyster toadfishOpsanus tauSee all other marine fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026