Gambia country information

Common names: [No common name]
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Occurs in the Gambia River (Ref. 28587).
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/ga.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Daget, J. and J.C. Njock, 1986
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Polynemidae (Threadfins)
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Gros capitaine, Barbudo gigante africano, Spanish, ... more

Main reference

Motomura, H. 2004. (Ref. 57343)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 200 cm TL male/unsexed; (Ref. 57402); common length : 150 cm TL male/unsexed; (Ref. 3659); max. published weight: 75.0 kg (Ref. 7386)

Environment

Marine; freshwater; brackish; demersal; depth range 15 - 55 m (Ref. 10799)

Climate / Range

Tropical, preferred 27°C (Ref. 107945); 22°N - 5°S, 26°W - 13°E (Ref. 57343)

Distribution

Eastern Atlantic: Senegal to Angola (Ref. 57402). Also reported from Mauritania (Ref. 55783).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 9; Dorsal soft rays (total): 12-13; Anal spines: 3; Anal soft rays: 11 - 12. Diagnosis: detached pectoral filaments short, only slightly longer than upper pectoral fin; base of anal fin as long as base of 2nd dorsal fin; body moderately elongate and compressed, its height comprised 4.0 to 4.5 times in standard length; snout very short, blunt and prominent; mouth inferior; maxillary bone distinctly widened at its end, reaching largely past eye; 2 widely separated dorsal fins, 1st with 8 flexible spines, 2nd with one flexible spine and 12-13 soft rays; 2nd dorsal fin and anal fin bases nearly equal; pectoral fin inserted very low on body, threadlike filaments 4 in number, generally somewhat longer than upper part of fin; scales ctenoid; head scaly (Ref. 57402). Coloration: body uniformly silvery, greyish on back, shading to whitish ventrally; fins yellow or grey; a dark blotch often present on gill cover (Ref. 57402).

Occurs in shallow waters, over sandy and muddy bottoms, sometimes in brackish habitats (Ref. 57343). Enters estuaries; occasionally caught in fresh water (Ref. 57402). Feeds on crustaceans and fishes (Ref. 10799). Flesh fairly tasteful (Ref. 57402).

IUCN Red List Status (Ref. 115185)

Least Concern (LC)

Threat to humans

Harmless

Human uses

Fisheries: commercial; gamefish: yes

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development

Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance

References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion

Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Common names | Photos

Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
4.0 ±0.66 se; Based on food items.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.34(?); assuming tm=3-4)

Vulnerability (Ref. 59153)
High to very high vulnerability (69 of 100)

Price category (Ref. 80766)
High

Polydactylus quadrifilis (Cuvier, 1829)