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Galeoides - Species in
Polynemidae - - Classification -
- Polynemidae
- Carangaria/misc
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Galeoides decadactylus (Bloch, 1795)
Lesser African threadfin
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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Galeoides decadactylus AquaMaps Data sources: GBIF OBIS |
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Galeoides decadactylus
Picture by Wirtz, P.
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Picture by Wirtz, P.
Nigeria country information
Common names:
[No common name]
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: commercial | Ref: Motomura, H., 2004
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Important in the commercial trawl fishery (Ref. 57343).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ni.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Motomura, H., 2004
National Database:
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: commercial | Ref: Motomura, H., 2004
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Important in the commercial trawl fishery (Ref. 57343).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ni.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Motomura, H., 2004
National Database:
Common names from other countries
Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) > Carangaria/misc (Various families in series Carangaria) > Polynemidae (Threadfins)
Etymology: Galeoides: Greek, galeos = a shark + suffix oides = similar to (Ref. 45335).
More on author: Bloch.
Etymology: Galeoides: Greek, galeos = a shark + suffix oides = similar to (Ref. 45335).
More on author: Bloch.
Environment: milieu / climate zone / depth range / distribution range Ecology
Marine; brackish; demersal; depth range 10 - 70 m (Ref. 10799). Subtropical; 37°N - 27°S, 19°W - 16°E (Ref. 57343)
Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Eastern Atlantic: West African coasts, from Canary Islands and Morocco to Angola (Ref. 57402). Sporadically known from Algeria and Namibia (Ref. 57343). Record from Mauritius is likely to be erroneous.
Length at first maturity / Size / Weight / Age
Maturity: Lm 11.6 range ? - ? cm
Max length : 50.0 cm TL male/unsexed; (Ref. 5377); common length : 30.0 cm TL male/unsexed; (Ref. 3659)
Max length : 50.0 cm TL male/unsexed; (Ref. 5377); common length : 30.0 cm TL male/unsexed; (Ref. 3659)
Short description Identification keys | Morphology | Morphometrics
Dorsal spines (total): 9; Dorsal soft rays (total): 13 - 14. Diagnosis: 9-10 short detached pectoral filaments, not exceeding length of upper pectoral fin; body moderately elongate and compressed, its height comprised 2.9-3.4 times in standard length; snout very short, blunt and prominent; mouth inferior; posterior edge of maxillary only slightly expanded, barely reaching past eye; 2 widely separated dorsal fins, 1st with 8 spines, 2nd with 1 flexible spine and 13-14 soft rays; 2nd
dorsal fin and anal fin bases barely equal; pectoral fin inserted low on body; scales ctenoid; head and unpaired fins partly covered with small scales (Ref. 57402).
Coloration: body uniformly silvery, upper part greyish and belly white; a large rounded black spot, about equal to eye diameter, generally visible under lateral line, behind opercle (Ref. 57402).
Occurs over sandy (Ref. 2683) and muddy bottoms in shallow waters (Ref. 4340), frequently in brackish habitats (Ref. 4340, 57402) and estuaries, but not in freshwaters (Ref. 57402). Feeds on benthic invertebrates (Ref. 5377). Sold fresh, dried salted or smoked (Ref. 36127).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Also Ref. 32209.
Main reference
Upload your references | References | Coordinator | Collaborators
Daget, J. and J.C. Njock, 1986. Polynemidae. p. 352-354. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 4340)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Near Threatened (NT) ; Date assessed: 15 July 2014
Threat to humans
Harmless
Human uses
Fisheries: commercial
FAO(Fisheries: production, species profile; publication : search) | FIRMS (Stock assessments) | FishSource | Sea Around Us
More information
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Reproduction
Maturity
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Anatomy
Gill area
Brain
Otolith
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genetics
Heterozygosity
Heritability
Genetics
Heterozygosity
Heritability
Tools
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Internet sources
Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes(genus, species) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record
Estimates based on models
Preferred temperature (Ref. 115969): 20.1 - 27.9, mean 25.9 (based on 66 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00542 - 0.01337), b=3.11 (2.98 - 3.24), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278): 3.6 ±0.67 se; based on food items.
Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.14-0.4).
Prior r = 0.49, 95% CL = 0.32 - 0.73, Based on 2 data-limited stock assessments.
Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (30 of 100).
Climate Vulnerability (Ref. 125649): Very high vulnerability (77 of 100).