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Zeugopterus norvegicus (Günther, 1862)
Norwegian topknot
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Zeugopterus norvegicus
Picture by Svensen, E.
Pictures | Google image
Picture by Svensen, E.
Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) > Pleuronectiformes (Flatfishes) > Scophthalmidae (Turbots)
Etymology: Zeugopterus: Greek, zygon = yoke + Greek, pteron = wing, fin.
More on author: Günther.
Etymology: Zeugopterus: Greek, zygon = yoke + Greek, pteron = wing, fin.
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range Ecology
Marine; demersal; depth range 10 - 200 m (Ref. 35388), usually 10 - 200 m (Ref. 35388). Temperate; 73°N - 46°N, 25°W - 25°E
Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Northeast Atlantic: off Iceland and from Murman coast to Bay of Biscay.
Size / Weight / Age
Short description Identification keys | Morphology | Morphometrics
Rough scales on both sides. Dorsal fin origin above upper eye. Pelvic and anal fins not used (Ref. 35388).
Occurs on rocky bottoms between 10 and 180 m. Feeds on small fish and invertebrates (Ref. 4703). Spawns in April - July (Ref. 35388).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Main reference
Upload your references | References | Coordinator | Collaborators
Nielsen, J.G., 1986. Scophthalmidae. p. 1287-1293. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the North-eastern Atlantic and the Mediterranean. UNESCO, Paris. Vol. 3. (Ref. 4703)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Least Concern (LC) ; Date assessed: 15 October 2013
CITES
Not Evaluated
Threat to humans
Harmless
Human uses
FAO - Publication: search | FishSource |
More information
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
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
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Anatomy
Gill area
Brain
Otolith
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genetics
Heterozygosity
Heritability
Genetics
Heterozygosity
Heritability
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Tools
Bio-Quiz | E-book | Field guide | Identification keys | Length-frequency wizard | Life-history tool | Point map | Classification Tree
| Catch-MSY |
Special reports
Download XML
Internet sources
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | DORIS | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record
Estimates based on models
Preferred temperature (Ref. 123201): 7.3 - 12.5, mean 10 °C (based on 1188 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 1.0020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00601 - 0.01824), b=3.00 (2.85 - 3.15), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278): 4.0 ±0.60 se; based on food items.
Generation time: 1.8 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153): Low vulnerability (23 of 100).
Nutrients (Ref. 124155): Calcium = 63 [25, 118] mg/100g; Iron = 0.304 [0.117, 0.669] mg/100g; Protein = 17.8 [15.9, 19.7] %; Omega3 = 0.454 [0.192, 1.076] g/100g; Selenium = 12.3 [5.1, 30.8] μg/100g; VitaminA = 28 [5, 143] μg/100g; Zinc = 0.604 [0.363, 0.985] mg/100g (wet weight);