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Hydrocynus forskahlii in Mauritania

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Hydrocynus forskahlii   (Cuvier, 1819)
Family:	Alestidae (African tetras)			picture (Hyfor_j0.jpg) by Mody, K.
Order:	Characiformes  (characins)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:
Max. size:	78.0 cm SL (male/unsexed; Ref. 2880); max. published weight: 15.5 kg (Ref. 13337); max. reported age: 4 years
Environment:	pelagic; potamodromous
Climate:	tropical
Global Importance:	fisheries: commercial
Resilience:	Medium, minimum population doubling time 1.4 - 4.4 years (K=0.17-0.45; tmax=4)
Distribution:	Africa: Nile, Lake Albert [=Lake Mobutu Sese Seko], Lakes Turkana and Gandjule (Margherita), Senegal, Niger, Volta, Côte d'Ivoire, Guinea, Cameroon, Democratic Republic of the Congo, Ghana, Liberia, Benue, Omo, Gambia, Chad, Sierra Leone, Benin.
Diagnosis:	Slender profile. Eye <70% of interorbital space. Long and few gill rakers. Inferior lobe of caudal as well as anterior end of anal of bright red color. Rest of fins uniformly gray.
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
Threatened:	Not Evaluated, see IUCN Red List  , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Paugy, D.. 1990. (Ref. 2880)
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Mauritania country information
Common names:	[ No common name ]		Ref:
Status:	native		Ref:
Salinity:	freshwater, brackish
Importance:	commercial		Ref:  Mohamed Fall, K.O., 2005
Regulations:	no regulations		Ref:
Uses:	no uses
Country Information:	www.cia.gov/cia/publications/factbook/geos/mr.html
Occurrences:	Occurrences    Point map
Main Ref:	Mohamed Fall, K.O., 2005
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More information:	Countries FAO areas Occurrences Introductions Ecosystem Ecology Diet Food items Food consumption Ration Predators Ciguatera Fish loss Common names Synonyms Pictures Sounds Reproduction Maturity Spawning Eggs Egg dev. Larvae Larval dynamics References Growth L-W relationship L-L relationship Length frequencies Recruitment Max. age & size Metabolism Morphology Morphometrics Gill area Brains Vision Collaborators Genetics Allele frequencies Heritability Strains Aquaculture Aquaculture profile Diseases Ecotoxicology Processing Speed Swim. type Stamps
	Note: No data are available if label is black .
Tools:	Biogeographic modelling | E-book | Field guide | Identification keys | Length-frequency Wizard | Life-history tool | Point map |
Internet sources:	BiOSC Point Data | CISTI | Google | GOBASE | GenBank ( genome, nucleotide ) | PubMed | Recipes | Scirus | Tree of Life | Zoological Record Other web sites |
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	Checked:  Mohamed Fall, K.O.	Modified:  Torres, Armi G.	Entered:  Torres, Armi G.

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07