Teleostei (teleosts) >
Pleuronectiformes (Flatfishes) >
Pleuronectidae (Righteye flounders) > Pleuronectinae
Etymology: Hippoglossoides: Greek, ippos = horse + Greek, glossa = tongue + Suffix oides = similar to (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; oceanodromous (Ref. 51243); depth range 10 - 3000 m (Ref. 58426), usually 90 - 250 m (Ref. 6263). Temperate; 80°N - 41°N, 72°W - 55°E
North Atlantic and Arctic Ocean. Two subspecies were recognized, H. p. platessoides from northwestern Atlantic, and H. p. limandoides from the northeastern Atlantic (Ref. 51668).
Length at first maturity / Size / Weight / Age
Maturity: Lm 35.0  range ? - ? cm
Max length : 82.6 cm TL male/unsexed; (Ref. 58426); max. published weight: 6.4 kg (Ref. 7251); max. reported age: 30 years (Ref. 6263)
Slender body and a large mouth. Dorsal fin starts above left eye. Lateral line almost straight. Rough scales (Ref. 35388).
Body shape (shape guide): short and / or deep.
Adults are most abundant from 90 m to 250 m deep and bottom temperatures of -0.5 to 2.5°C (Ref. 6263). Live on soft bottoms (Ref. 9988, 58426). Feed on invertebrates and small fishes. Batch spawner (Ref. 51486). Marketed fresh and frozen; eaten steamed, fried, microwaved and baked (Ref. 9988).
Cooper, J.A. and F. Chapleau, 1998. Monophyly and intrarelationships of the family Pleuronectidae (Pleuronectiformes), with a revised classification. Fish. Bull. 96(4):686-726. (Ref. 30193)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: highly commercial; gamefish: yes
Tools
Special reports
Download XML
Internet sources
Estimates based on models
Preferred temperature (Ref.
123201): 0.6 - 10.3, mean 5.6 °C (based on 824 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00554 - 0.00753), b=3.06 (3.02 - 3.10), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trophic level (Ref.
69278): 4.1 ±0.0 se; based on diet studies.
Generation time: 13.1 (8.8 - 14.5) years. Estimated as median ln(3)/K based on 12
growth studies.
Resilience (Ref.
120179): Low, minimum population doubling time 4.5 - 14 years (rm=0.43; K=0.06-0.12; tm=2-11; tmax=30; Fec=50,000).
Prior r = 0.19, 95% CL = 0.12 - 0.28, Based on 2 full stock assessments.
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (66 of 100).
🛈
Climate Vulnerability (Ref.
125649): Moderate to high vulnerability (46 of 100).
🛈
Nutrients (Ref.
124155): Calcium = 19.2 [7.5, 32.8] mg/100g; Iron = 0.214 [0.105, 0.410] mg/100g; Protein = 17.1 [15.7, 18.5] %; Omega3 = 0.407 [0.194, 0.867] g/100g; Selenium = 31.2 [15.1, 68.7] μg/100g; VitaminA = 8.07 [1.81, 36.72] μg/100g; Zinc = 0.336 [0.224, 0.512] mg/100g (wet weight);