Giant African threadfin (Polydactylus quadrifilis) fish species and information / pictures of Giant African threadfin - Polydactylus quadrifilis

Giant African threadfin (Polydactylus quadrifilis) fish species information

Scientific Name
Polydactylus quadrifilis

Common Name
Giant African threadfin

Biology
Occurs in shallow waters, over sandy and muddy bottoms, sometimes in brackish habitats (Ref. 57343). Feeds on crustaceans and fishes (Ref. 10799).

Classification

Classified By
Cuvier, 1829
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Threadfins (Polynemidae)

Distribution

Region
Eastern Atlantic
Distribution
Eastern Atlantic: Senegal to Congo. Reported from Mauritania (Ref. 55783).
Range
22°N - 5°S, 18°W - 13°E

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
15 m
Depth To - meters
55 m
Zone
demersal
Environment
Marine; brackish; demersal; depth range 15 - 55 m (Ref. 10799)
Trophic Level
4.01 s.e. 0.66 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
True
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
200 cm
Common Length
150 cm
Phylogenetic Diversity Index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: commercial; gamefish: yes
Vulnerability
High to very high vulnerability (69 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.34(?); assuming tm=3-4)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated