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Cynoscion virescens (Cuvier, 1830)

Green weakfish
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Native range | All suitable habitat | Point map | Year 2050
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Cynoscion virescens   AquaMaps   Data sources: GBIF OBIS
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Image of Cynoscion virescens (Green weakfish)
Cynoscion virescens
Picture by JAMARC

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

Teleostei (teleosts) > Eupercaria/misc (Various families in series Eupercaria) > Sciaenidae (Drums or croakers)
Etymology: Cynoscion: Greek, kyon = dog + Greek, odous = teeth + Greek, skion, skiaina = barbel, red mullet (Ref. 45335).
More on author: Cuvier.

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

Marine; brackish; demersal; depth range 6 - 70 m (Ref. 3702). Tropical; 14°N - 24°S, 84°W - 34°W

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

Western Atlantic: Nicaragua to Santos, Brazil.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 115 cm TL male/unsexed; (Ref. 40637); common length : 65.0 cm TL male/unsexed; (Ref. 3702); max. published weight: 4.4 kg (Ref. 125970)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 27 - 31; Anal spines: 2; Anal soft rays: 8. Greyish to brownish above, silvery below. Upper sides sometimes with inconspicuous minute dark dots. Dorsal fin dusky, its spinous portion black-edged. Soft dorsal fin with dark spots on each ray. Pectoral and pelvic fins as well as anal fin yellowish to orange. Caudal fin dusky. Inside mouth orange. Mouth large, distinctly oblique, lower jaw projecting. Upper jaw with a pair of large canine-like teeth at tip. Chin without barbels or pores. Snout with 2 marginal pores. Gas bladder with a pair of long, curved, horn-like appendages. Sagitta (large earstone) elongate, with a notch on dorsal margin. Soft portion of dorsal fin membranes unscaled except 2 or 3 rows of scales at base (Ref 51721).

Biology     Glossary (e.g. epibenthic)

Usually found over sandy mud bottoms in coastal waters near river mouths (Ref. 3702). Adults stay in deep waters during the day and swim to the surface at night (Ref. 35237). Juveniles inhabit estuaries. Marketed fresh; its flesh is of excellent quality (Ref. 3702). Its swim bladder is being used to make glue (Ref. 35237).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Cervigón, F., 1993. Los peces marinos de Venezuela. Volume 2. Fundación Científica Los Roques, Caracas,Venezuela. 497 p. (Ref. 9626)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 15 January 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: commercial; gamefish: yes
FAO - Publication: search | FIRMS - Stock assessments | FishSource | Sea Around Us

More information

Trophic ecology
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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 | 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): 26.7 - 28, mean 27.4 °C (based on 112 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00531 - 0.00822), b=3.06 (3.04 - 3.08), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278):  4.0   ±0.70 se; based on food items.
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Prior r = 0.26, 95% CL = 0.17 - 0.38, Based on 1 data-limited stock assessment.
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (69 of 100).
Price category (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 67.7 [40.4, 126.2] mg/100g; Iron = 0.787 [0.413, 1.359] mg/100g; Protein = 18.5 [17.0, 20.3] %; Omega3 = 0.208 [0.114, 0.339] g/100g; Selenium = 65.4 [34.7, 122.1] μg/100g; VitaminA = 13.3 [5.1, 37.4] μg/100g; Zinc = 0.939 [0.680, 1.330] mg/100g (wet weight);