Actinopterygii (ray-finned fishes) > Pleuronectiformes
(Flatfishes) > Pleuronectidae
(Righteye flounders) > Pleuronectinae
Etymology: Lepidopsetta: Greek, lepis = scale + Greek, psetta = grouper (Ref. 45335); bilineata: Specific name refers to the bifurcate supratemporal branch of the lateral line (bilineata = two-lined).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 0 - 575 m (Ref. 6793), usually 0 - 183 m (Ref. 6885). Temperate; 67°N - 34°N, 124°E - 119°W (Ref. 54562)
North Pacific: Baja California to the eastern Aleutian Islands and extreme southeastern Bering Sea.
21Length at first maturity / Size / Weight / Age
Maturity: Lm 34.7, range 31 - ? cm
Max length : 58.0 cm TL male/unsexed; (Ref. 6885); 60.0 cm TL (female); max. published weight: 1.8 kg (Ref. 56370); max. reported age: 26 years (Ref. 55701)
Morphology | Morphometrics
soft rays: 50 - 65;
Vertebrae: 39 - 42. Dorsal origin over forward part of eye. Caudal with posterior margin a broad 'V'. Pectorals small and may be asymmetrical (Ref. 6885). Blind side white, with glossy highlights along myotome margins, increasing anteriorly. Pores: supraorbital 3-9; preopercular 5-7; lateral line 70-91. Interorbital space narrow (Ref. 37594).
Adults occur over sand and gravel substrates to depths of 339 m; larvae collected over depths less than 1,000 m (Ref. 37594). Feed on mollusks, polychaete worms, crustaceans, brittle stars, and fishes (Ref. 6885). A tasty food fish; in some years commercial catch in Canada reaches 3,000 t (Ref. 2850).
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. (Ref. 37594)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 1.5 - 10.1, mean 5.1 (based on 1427 cells).
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00521 - 0.01596), b=3.07 (2.92 - 3.22), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.2 se; Based on diet studies.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (K=0.15; tm=9; tmax=26).
Prior r = 0.27, 95% CL = 0.17 - 0.45, Based on 1 stock assessment.
Vulnerability (Ref. 59153
): High vulnerability (57 of 100) .