HomeMarine aquarium fishOther marine fishC-O sole C-O sole (Pleuronichthys coenosus) Scientific name: Pleuronichthys coenosus Girard, 1854 The C-O sole (Pleuronichthys coenosus) is a marine fish of the family Pleuronectidae. Native range: Eastern Pacific, Sitka, southeastern Alaska to Bahia San Quintin, northern Baja California, Mexico. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 65-78; Anal spines: 0; Anal soft rays: 46 - 56; Vertebrae: 36 - 38. Dorsal origin with first 5-6 rays on the blind side. Caudal deep and rounded. Pectorals moderately long, bluntly pointed.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePleuronichthys coenosusFamilyPleuronectidae (Righteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length36.0Depth range18–350 m (59–1148 ft)EnvironmentMarine; demersal; depth range 18 - 350 mClimateSubtropicalDistributionEastern Pacific: Sitka, southeastern Alaska to Bahia San Quintin, northern Baja California, Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; gamefish: yes; aquarium: public aquariumsResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More other marine fishPacific sand solePsettichthys melanostictusPeruvian banded croakerParalonchurus peruanusChannel flounderSyacium micrurumEyed flounderBothus ocellatusPygmy poacherOdontopyxis trispinosaYellow croakerLarimichthys polyactisSee 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