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Cynoscion acoupa  (Lacepède, 1801)

Acoupa weakfish
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| Native range | All suitable habitat | PointMap | Year 2100 |
This map was computer-generated and has not yet been reviewed.
Cynoscion acoupa   AquaMaps   Data sources: GBIF OBIS
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Image of Cynoscion acoupa (Acoupa weakfish)
Cynoscion acoupa
Picture by Vaske Jr., T.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Sciaenidae (Drums or croakers)
Etymology: Cynoscion: Greek, kyon = dog + Greek, odous = teeth + Greek, skion, skiaina = barbel, red mullet (Ref. 45335).

Environment / Climate / Range Ecology

Marine; freshwater; brackish; demersal; oceanodromous (Ref. 51243); depth range ? - 20 m (Ref. 3702).   Subtropical

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 53 - ? 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 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).

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

Western Atlantic: Panama to Argentina.

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. 96402)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: commercial; gamefish: yes; aquarium: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00741 (0.00492 - 0.01117), b=3.06 (2.94 - 3.18), based on LWR estimates for species & Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.1   ±0.70 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (K=0.27).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (45 of 100) .
Price category (Ref. 80766):   Medium.