HomeFish encyclopediaRay-finned fishesFlatfishesRighteye floundersNorthern rock sole Northern rock sole (Lepidopsetta polyxystra) Scientific name: Lepidopsetta polyxystra Orr & Matarese, 2000 The Northern rock sole (Lepidopsetta polyxystra) is a marine fish of the family Pleuronectidae. BiologyOccurs on sand, also together with gravel and mud.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLepidopsetta polyxystraFamilyPleuronectidae (Righteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length69.0Depth range0–700 m (0–2297 ft)EnvironmentMarine; demersal; depth range 0 - 700 m, usually 19 - 246 mClimateTemperateDistributionNorth Pacific: Puget Sound, Washington (USA) through the Bering Sea and Aleutian Islands to the Kuril Islands; overlapping with L. bilineata from the extreme SE Bering Sea to Puget Sound; and with L. mochigarei in the southern Sea of Okhotsk.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 years (tm=7; K=0.25) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026