Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina bottenlevande; havsvandrande (Ref. 51243); djupintervall 50 - 2000 m (Ref. 4705). Temperate; 79°N - 36°N, 77°W - 55°E
Atlantic Ocean and adjacent Arctic.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 122.0, range 135 - ? cm
Max length : 470 cm TL hane/ej könsbestämd; (Ref. 7251); 300.0 cm TL (female); publicerad maxvikt: 320.0 kg (Ref. 7251); rapporterad maxålder: 50 år (Ref. 173)
Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 98 - 110; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 73 - 85. Uniformly dark brown or black; young marbled or spotted with paler marks (Ref. 4705).
Body shape (shape guide): fusiform / normal.
Adults are benthic but occasionally pelagic (Ref. 4705). Feed mainly on other fishes (cod, haddock, pogge, sand-eels, herring, capelin), but also takes cephalopods, large crustaceans and other bottom-living animals. Batch spawner (Ref. 51846). Growth rate varies according to density, competition and availability of food. Slow growth rate and late onset of sexual maturity, halibut populations can be seriously affected by overfishing (Ref. 35388). Utilized fresh, dried or salted, smoked and frozen; can be steamed, fried, broiled, boiled, microwaved and baked (Ref. 9988). Also Ref. 58426.
Males reach sexual maturity at 7-8 years and females at 10-11 years. Spawning happens from December to April, near the bottom (300 to 700 m), at temperatures between 5 and 7°. Egg size 3.0-3.8, larval size at hatching 6.5 mm (Ref. 4705).
Vinnikov, K.A., R.C. Thomson and T.A. Munroe, 2018. Revised classification of the righteye flounders (Teleostei: Pleuronectidae) based on multilocus phylogeny with complete taxon sampling. Molecular phylogenetics and evolution, 125:147-162. (Ref. 122998)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: kommersiell; Vattenbruk: experimentell; sportfisk: ja; Akvarium: Offentliga akvarier
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 0.4 - 7.9, mean 3.4 °C (based on 1760 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00401 - 0.00754), b=3.17 (3.09 - 3.25), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trofisk nivå (Ref.
69278): 4.0 ±0.5 se; based on diet studies.
Resiliens (Ref.
120179): Mycket låg, lägsta populationsfördubblingstid mer än 14 år (tmax=30; tm=10; K=0.02-0.2; Fec=1,300,000; also Musick et al. 2000 (Ref.
36717)).
Prior r = 0.27, 95% CL = 0.18 - 0.40, Based on 1 full stock assessment.
Sårbarhet i fisket (Ref.
59153): Very high vulnerability (88 of 100).
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Sårbarhet för klimatet (Ref.
125649): Moderate vulnerability (43 of 100).
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Näringsämnen (Ref.
124155): Calcium = 5.62 [1.90, 13.84] mg/100g; Iron = 0.178 [0.067, 0.495] mg/100g; Protein = 17.9 [16.0, 20.4] %; Omega3 = 0.35 [0.14, 0.90] g/100g; Selenium = 57.8 [19.5, 148.9] μg/100g; VitaminA = 7.93 [1.78, 32.76] μg/100g; Zinc = 0.387 [0.168, 0.655] mg/100g (wet weight); based on
nutrient studies.
