Lepidopsetta polyxystra  Orr & Matarese, 2000

Northern rock sole
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Lepidopsetta polyxystra   AquaMaps   Data sources: GBIF OBIS
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Image of Lepidopsetta polyxystra (Northern rock sole)
Lepidopsetta polyxystra
Picture by Orlov, A.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Pleuronectiformes (Flatfishes) > Pleuronectidae (Righteye flounders) > Pleuronectinae
Etymology: Lepidopsetta: Greek, lepis = scale + Greek, psetta = gruoper (Ref. 45335);  polyxystra: From the numerous gill rakers of this fish compared with congeneric species.

Environment / Climate / Range Ecology

Marine; demersal; depth range 0 - 700 m (Ref. 50550), usually 19 - 246 m (Ref. 37594).   Temperate

Length at first maturity / Size / Weight / Age

Maturity: Lm 30.9  range ? - ? cm
Max length : 69.0 cm TL male/unsexed; (Ref. 37594); 49.0 cm FL (female); max. reported age: 18 years (Ref. 37594)

Short description Morphology | Morphometrics

Vertebrae: 39 - 41. Blind side creamy in life, no glossy highlights along myotome margins. Pores: supraorbital 1-3, rarely 4-7; preopercular 5-8; lateral line 76-100. Interorbital space wide. Total scales above and below lateral line 66-96 (Ref. 37594).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

North 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.

Biology     Glossary (e.g. epibenthic)

Occurs on sand, also together with gravel and mud (Ref. 37594).

Main reference Upload your references | References | Coordinator : Amaoka, Kunio | Collaborators

Orr, J.W. and A.C. Matarese, 2000. Revision of the genus Lepidopsetta Gill, 1862 (Teleostei: Pleuronectidae) based on larval and adult morphology, with a description of a new species from the North Pacific Ocean and Bering Sea. Fish. Bull. 98:539-582.

IUCN Red List Status (Ref. 90363)

  Not Evaluated 

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00787 (-0.02572 - 0.04146), b=3.09 (3.06 - 3.11), based on LWR estimates for this species (Ref. 93245).
Trophic Level (Ref. 69278):  3.3   ±0.5 se; Based on diet studies.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (tm=7; K=0.25).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (48 of 100) .
Price category (Ref. 80766):   Medium.