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Cynoscion jamaicensis  (Vaillant & Bocourt, 1883)

Jamaica weakfish
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Cynoscion jamaicensis
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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; brackish; demersal; depth range ? - 70 m (Ref. 9626), usually 18 - 55 m (Ref. 9626).   Subtropical; 11°N - 10°N, 63°W - 61°W (Ref. 54358)

Length at first maturity / Size / Weight / Age

Maturity: Lm 25.1, range 15 - ? cm
Max length : 50.0 cm TL male/unsexed; (Ref. 3702); common length : 35.0 cm TL male/unsexed; (Ref. 3702); max. published weight: 1.0 kg (Ref. 5217)

Short description Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 23-27; Anal spines: 2; Anal soft rays: 9. Colour greyish above, silvery below. Without conspicuous spots, but with faint dark streaks along scale rows above lateral line. Pectoral-fin bases and upper rays slightly dark, pelvic and anal fins often yellowish, dorsal and caudal fins dusky with darker margin. Inside opercle darkish visible externally. Mouth large, oblique, lower jaw slightly projecting. Upper jaw with a pair of large canine-like teeth at tip. Chin without barbel or pores, snout with only 2 marginal pores. Gas bladder with a pair of horn-like anterior appendages. Sagitta (large earstone) moderately broad and thick, Lapillus (small earstone rudimentary. Scales large. Soft portion of dorsal-fin base covered with small scales up to 1/2 of fin height (Ref 51721).

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

Western Atlantic: Panama and the Greater Antilles to Argentina. Including Lesser Antilles (Ref. 26938). Also reported in Nicaragua (Ref. 13613).

Biology     Glossary (e.g. epibenthic)

Found over sand or mud bottoms from the coastline to about 60 m depth (Ref. 3702); rarely in waters with a depth of less than 18 m (Ref. 9626). Juveniles inhabit river estuaries (Ref. 3702). Oviparous, with high fecundity (Ref. 54358). Feed on fishes and crustaceans like crabs and shrimps (Ref. 35237). Important food fish (Ref. 3702).

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.

IUCN Red List Status (Ref. 90363)

Threat to humans


Human uses

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

More information

FAO areas
Food items
Food consumption
Aquaculture profile
Allele frequencies
Mass conversion
Stamps, Coins
Swim. type
Gill area


Special reports

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | National databases | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00760 - 0.00999), b=3.07 (3.04 - 3.10), based on LWR estimates for this species (Ref. 93245).
Trophic Level (Ref. 69278):  4.2   ±0.7 se; Based on diet studies.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Fec = 47,000).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (32 of 100) .
Price category (Ref. 80766):   Medium.