Hydrocynus brevis

Hydrocynus brevis, also known as the tigerfish, Nile tigerfish or Sahelian tigerfish, is a predatory freshwater fish distributed throughout Africa.

Hydrocynus brevis
Young Hydrocynus brevis specimen at approximately 6 inches (15 cm) in length.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Alestidae
Genus: Hydrocynus
Species:
H. brevis
Binomial name
Hydrocynus brevis
Günther, 1864
Synonyms[2]
  • Hydrocyon brevis Gunther, 18614
  • Hydrocyon somonorum Daget, 1954
  • Hydrocynus somonorum (Daget, 1954)

Appearance

The tigerfish is silver in colour when young, with thin black horizontal stripes and an elongated body that tapers at both ends. As the fish grows, it will develop a bronze coloration and the stripes will fade. The ventral and caudal fins have a slight red-orange tint, and the adipose fin is grey to black. It grows to a length of 86 centimetres (34 in) SL.[3]

Distribution

This species has a wide distribution. It is found from Senegal to Ethiopia, throughout the Nile. In Northeast Africa it is found in the Ghazal and Jebel systems, Sudan, as well as Baro River, Ethiopia. In Western Africa it is known from Chad, Niger/Bénoué, Volta, Senegal and Gambia.

Habitat and ecology

A demersal, potamodromous freshwater species, Hydrocynus brevis prefers open-water habitats. It feeds mainly on fish and shrimps, with smaller individuals consuming aquatic insects.

Population and conservation status

This species is rather common over most of its range, without any known widespread threats. There is, however, a conservation policy in place in Ghana, and one potential threat is overfishing, as well as deforestation and pollution. There currently is a lack of research regarding the population of the species and its range. Habitat maintenance and restoration may also be required.[1]

Head detail.

References
  1. A. Azeroual; M. Entsua-Mensah; A. Getahun; P. Lalèyè (2010). "Hydrocynus brevis". The IUCN Red List of Threatened Species . International Union for Conservation of Nature and Natural Resources. doi:10.2305/IUCN.UK.2010-3.RLTS.T182658A7936630.en.
  2. "Synonyms of Synonyms of Hydrocynus brevis (Günther, 1864)". Fishbase. Retrieved 6 April 2017.
  3. "Hydrocynus Brevis (Gunther, 1864)." FishBase. N.p., n.d. Web. 22 Dec. 2013.


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