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Symphurus nigrescens Rafinesque, 1810

Tonguesole
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Native range | All suitable habitat | Point map | Year 2050
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Symphurus nigrescens   AquaMaps   Data sources: GBIF OBIS
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Image of Symphurus nigrescens (Tonguesole)
Symphurus nigrescens
Picture by Patzner, R.

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

Teleostei (teleosts) > Pleuronectiformes (Flatfishes) > Cynoglossidae (Tonguefishes) > Symphurinae
Etymology: Symphurus: Greek, syn, symphysis = grown together + Greek, oura = tail (Ref. 45335).
More on author: Rafinesque.

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

Marine; demersal; depth range 20 - 1140 m (Ref. 2683). Subtropical; 45°N - 17°S, 32°W - 36°E

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

Eastern Atlantic: Mediterranean, Azores, North Spain to Angola, St. Helena and Ascension Is.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 12.3 cm TL male/unsexed; (Ref. 128593); max. published weight: 16.77 g (Ref. 128593)

Biology     Glossary (e.g. epibenthic)

Occurs on mud or sand bottoms of the continental slope and shelf (Ref. 2683).

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

Main reference Upload your references | References | Coordinator | Collaborators

Desoutter, M., 1990. Cynoglossidae. p. 1050-1054. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 6511)

IUCN Red List Status (Ref. 130435: Version 2024-1)

  Least Concern (LC) ; Date assessed: 21 May 2013

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: commercial
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet composition
Food consumption
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Predators
Ecology
Ecology
Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Maturity/Gills rel.
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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | 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 | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 11 - 15, mean 13.9 °C (based on 172 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00324 - 0.00708), b=3.24 (3.12 - 3.36), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.5   ±0.0 se; based on diet studies.
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
Price category (Ref. 80766):   Very high.
Nutrients (Ref. 124155):  Calcium = 175 [82, 422] mg/100g; Iron = 1.46 [0.67, 2.80] mg/100g; Protein = 18.5 [16.3, 20.7] %; Omega3 = 0.412 [0.177, 0.909] g/100g; Selenium = 38.3 [17.1, 81.9] μg/100g; VitaminA = 17.4 [5.0, 59.1] μg/100g; Zinc = 0.983 [0.644, 1.488] mg/100g (wet weight);