Glyptocephalus zachirus, Rex sole : fisheries

Glyptocephalus zachirus Lockington, 1879

Rex sole
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Glyptocephalus zachirus   AquaMaps   Data sources: GBIF OBIS
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Image of Glyptocephalus zachirus (Rex sole)
Glyptocephalus zachirus
Picture by Archipelago Marine Research Ltd.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Pleuronectiformes (Flatfishes) > Pleuronectidae (Righteye flounders) > Microstominae
Etymology: Glyptocephalus: Greek, glyptes = carver + Greek, kephale = head (Ref. 45335); zachirus: From the Greek za and cheir, meaning 'long'and 'hand' (Ref. 27436).

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal; depth range 0 - 900 m (Ref. 50610), usually 61 - 500 m (Ref. 2850). Temperate; 65°N - 28°N, 155°E - 115°W

Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

North Pacific: from Kuril Island to Bering Sea coasts of Russia and Alaska (Ref. 27436) to Cedros Island, northern Baja California, Mexico.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL male/unsexed; (Ref. 56527); common length : 36.0 cm TL male/unsexed; (Ref. 56527); max. published weight: 2.0 kg (Ref. 56527); max. reported age: 27 years (Ref. 55701)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 87 - 110; Anal spines: 0; Anal soft rays: 78 - 93; Vertebrae: 62 - 65. Dorsal origin above middle of upper eye. Posterior margin of caudal like a 'V'. Pectoral on eyed side greatly elongated.
Body shape (shape guide): short and / or deep.

Biology     Glossary (e.g. epibenthic)

A slow-growing species found on sand or mud bottoms (Ref. 2850). Usually discarded by trawlers but sometimes processed into fertilizer (Ref. 27436). Flesh considered tasty (Ref. 27436). Utilized fresh and frozen; eaten steamed, fried, microwaved and baked (Ref. 9988).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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

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)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))

  Least Concern (LC) ; Date assessed: 13 August 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: commercial
FAO - Fisheries: landings search; Publication: search | FishSource | Sea Around Us

More information

Trophic ecology
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Distribution
Territories
FAO areas
Ecosystems
Occurrences
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BRUVS - Videos
Anatomy
Gill area
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Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
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Genetics
Heterozygosity
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Genetic Diversity
Human related
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Aquaculture profiles
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Ciguatera cases
Stamps, coins, misc.
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Taxonomy
Common names
Synonyms
Morphology
Morphometrics
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References
References

Tools

E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Catch-MSY |

Special reports

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Fisheries: landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OceanAdapt | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | RFE Identification | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00490 (0.00295 - 0.00812), b=3.13 (2.98 - 3.28), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level
(Ref. 69278) 		3.3   ±0.1 se; based on diet studies.
Resilience
(Ref. 120179) 		Low, minimum population doubling time 4.5 - 14 years (tm=3-6; tmax=27; K=0.1-0.3).
Rate of population increase Prior r = 0.32, 95% CL = 0.21 - 0.48, Based on 2 full stock assessments.
Fishing Vulnerability
(Ref. 59153) 		High vulnerability (65 of 100). 🛈
Climate Vulnerability
(Ref. 125649) 		Low to moderate vulnerability (32 of 100). 🛈
Price category
(Ref. 80766) 		High.
Nutrients
(Ref. 124155) 		Calcium = 25.9 [10.7, 47.1] mg/100g; Iron = 0.241 [0.123, 0.458] mg/100g; Protein = 16.8 [15.5, 18.2] %; Omega3 = 0.346 [0.172, 0.726] g/100g; Selenium = 23.6 [11.9, 49.1] μg/100g; VitaminA = 8.72 [2.05, 36.29] μg/100g; Zinc = 0.448 [0.303, 0.659] mg/100g (wet weight);