Cynoscion acoupa, Acoupa weakfish : fisheries, gamefish, aquarium

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Cynoscion acoupa (Lacepède, 1801)

Acoupa weakfish
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Native range | All suitable habitat | Point map | Year 2050
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Cynoscion acoupa   AquaMaps   Data sources: GBIF OBIS
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Image of Cynoscion acoupa (Acoupa weakfish)
Cynoscion acoupa
Picture by Vaske Jr., T.

Brazil territory information

Common names: Calafetão, Cambucu, Cambuçu
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref: Barreto, T.M.R.R., K.M.F. Freire, J.J.C. Reis-Júnior, L.C. Rosa, A. Carvalho-Filho and M.M. Rotundo, 2018
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Caught by shrimp trawl in Pirambu, Sergipe (Ref. 118626).
National Checklist:
Territory Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Chao, L.N., 1978
National Database:

Common names from other countries

Acoupa toeroe, Corvinata amarilla, Grey snapper, ... more

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: Lacepède.

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

Marine; freshwater; brackish; demersal; oceanodromous (Ref. 51243); depth range 1 - 20 m (Ref. 3702). Subtropical; 13°N - 40°S, 80°W - 34°W

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

Western Atlantic: Panama to Argentina; Southwest Atlantic: Sergipe, Brazil (Ref. 118626).

Length at first maturity / Size / Weight / Age

Maturity: Lm 42.7  range ? - ? cm
Max length : 110 cm TL male/unsexed; (Ref. 40637); common length : 45.0 cm TL male/unsexed; (Ref. 3702); max. published weight: 17.0 kg (Ref. 40637)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 17 - 22; Anal spines: 2; Anal soft rays: 7 - 9. Body nearly uniform silvery, dark greenish above. Without conspicuous spots on side but with diffuse dark areas along base of dorsal fin and on margin of spinous dorsal fin, ventral side of head, lower margin of pectoral, pelvic, and caudal fins often yellowish orange. Inside of opercle dusky. Mouth large, oblique. Lower jaw slightly projecting. Upper jaw with a pair of large canine-like teeth at tip. Lower jaw with a row of enlarged inner-row teeth, gradually increasing in size posteriorly. Chin without barbels or pores. Snout with 2 marginal pores. Pectoral fins about equal in length to pelvic fins. Gas bladder with a pair of long, straight, horn-like appendages. Sagitta earstone thin and elongate. Soft portion of dorsal fin unscaled except 2 or 3 rows of small scales along its base (Ref 51271).
Body shape (shape guide): fusiform / normal.

Biology     Glossary (e.g. epibenthic)

Forms schools (Ref. 35237). Found over mud or sandy mud bottoms near mouths of rivers. Juveniles are restricted to brackish and fresh waters. Feeds on shrimps and fishes. Important food fish (Ref. 3702).

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

Main reference Upload your references | References | Coordinator | Collaborators

Chao, L.N., 1978. Sciaenidae. In W. Fischer (ed.) FAO species identification sheets for fishery purposes. West Atlantic (Fishing Area 31). Volume 4. FAO, Rome. (Ref. 3702)

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

  Vulnerable (VU) (A2bcd+4bcd); Date assessed: 10 October 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: commercial; gamefish: yes; aquarium: commercial
FAO - Publication: search | FishSource | Sea Around Us

More information

Trophic ecology
Food items (preys)
Diet composition
Food consumption
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Predators
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Ecology
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Length-weight rel.
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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 - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | National databases | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 22.5 - 28, mean 27.3 °C (based on 292 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00488 - 0.01179), b=3.06 (2.94 - 3.18), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.1   ±0.70 se; based on food items.
Generation time: 4.1 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (K=0.27).
Prior r = 0.56, 95% CL = 0.37 - 0.84, Based on 3 data-limited stock assessments.
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (45 of 100). 🛈
Price category (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 51.9 [30.0, 101.1] mg/100g; Iron = 0.842 [0.438, 1.547] mg/100g; Protein = 19.5 [18.0, 21.2] %; Omega3 = 0.291 [0.169, 0.485] g/100g; Selenium = 22.7 [11.9, 48.1] μg/100g; VitaminA = 7.48 [2.48, 25.80] μg/100g; Zinc = 0.614 [0.445, 0.913] mg/100g (wet weight); based on nutrient studies.