HomeFish encyclopediaRay-finned fishesFlatfishesRighteye floundersCurlfin sole Curlfin sole (Pleuronichthys decurrens) Scientific name: Pleuronichthys decurrens Jordan & Gilbert, 1881 The Curlfin sole (Pleuronichthys decurrens) is a marine fish of the family Pleuronectidae. Native range: Eastern Pacific, Prince William Sound, Alaska to Bahia San Quintin, northern Baja California, Mexico. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 67-79; Anal spines: 0; Anal soft rays: 46 - 52; Vertebrae: 37 - 39. Dorsal origin far forward at angle of mouth, first 9-12 rays on the blind side. Caudal deep and rounded.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePleuronichthys decurrensFamilyPleuronectidae (Righteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length37.0Depth range8–533 m (26–1749 ft)EnvironmentMarine; demersal; depth range 8 - 533 m, usually 20 - ? mClimateSubtropicalDistributionEastern Pacific: Prince William Sound, Alaska to Bahia San Quintin, northern Baja California, Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; gamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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