African scad (Trachurus delagoa) fish species and information / pictures of African scad - Trachurus delagoa

African scad (Trachurus delagoa) fish species information

Scientific Name
Trachurus delagoa

Common Name
African scad

Biology
Dorsal spines (total): 9; Dorsal soft rays (total): 28-32; Anal spines: 3; Anal soft rays: 24 - 28. Dark blue above, silvery below; anal and pectoral fins pale yellow; caudal fin dark grey; pelvic fins white or hyaline; opercle with black spot (Ref. 3197).

Classification

Classified By
Nekrasov, 1970
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Jacks and pompanos (Carangidae)

Distribution

Region
Western Indian Ocean
Distribution
Western Indian Ocean: Mozambique and South Africa; also southern Madagascar and Walters Shoals.
Range
Unknown

Environment

Climate
Deep-water
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
0 m
Depth To - meters
400 m
Zone
benthopelagic
Environment
Marine; benthopelagic; depth range 0 - 400 m (Ref. 3197)
Trophic Level
3.73 s.e. 0.57 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
35.0 cm
Common Length
Unknown 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: minor commercial; gamefish: yes
Vulnerability
Low to moderate vulnerability (25 of 100)
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated