Elongate tigerfish (Hydrocynus forskahlii) fish species and information / pictures of Elongate tigerfish - Hydrocynus forskahlii

Elongate tigerfish (Hydrocynus forskahlii) fish species information

Scientific Name
Hydrocynus forskahlii

Common Name
Elongate tigerfish

Biology
Forms shoals. An open water predator often found near the water surface (Ref. 13337). Feeds on fishes, preferring long bodied fish as they are easier to swallow and also takes insects, grass and snails (Ref. 13337). Cannibalistic. Preyed upon by fish eagle Haliaeetus vocifer (Ref. 13337). Breeding migrations have been reported up several tributaries of Lake Kariba during the rains (Ref. 13337). Affinities: H. vittatus.

Classification

Classified By
Cuvier, 1819
Class
Ray-finned fishes (Actinopterygii)
Order
Characins (Characiformes)
Family
African tetras (Alestidae)

Distribution

Region
Africa
Distribution
Africa: Nile, Lake Albert [=Lake Mobutu Sese Seko], Lakes Turkana and Gandjule (Margherita), Senegal, Niger, Volta, C?te d'Ivoire, Guinea, Cameroon, Democratic Republic of the Congo, Ghana, Liberia, Benue, Omo, Gambia, Chad, Sierra Leone, Benin.
Range
Unknown

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
pelagic
Environment
Freshwater; pelagic; potamodromous (Ref. 51243)
Trophic Level
3.98 s.e. 0.48 Based on diet studies.
Occurs in Marine / Salt water
False
Occurs in Brackish water
False
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
78.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.5156 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
Moderate vulnerability (39 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.17-0.45; tmax=4)
Threat To Humans
  Harmless
IUCN Red List Status
  Least Concern (LC)