Country Species Summary

Brycinus imberi (Peters, 1852)
Family:	Alestidae (African tetras)	picture (Brimb_u2.jpg) by Gratwicke, B.
Order:	Characiformes (characins)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Spot-tail
Max. size:	19.8 cm TL (male/unsexed; Ref. 2880); max. published weight: 300 g (Ref. 7248); max. reported age: 5 years
Environment:	demersal; potamodromous; pH range: 6 - 6.5; dH range: 4 - 18
Climate:	tropical; 22 - 26°C; 23°S - 31°S
Global Importance:	fisheries: subsistence fisheries; aquarium: commercial; bait: usually
Resilience:	High, minimum population doubling time less than 15 months (K=1.4; tmax=5)
Distribution:	Africa: Mono River in Togo to Nipoué River in Liberia; lower Zambezi, Wami River in Tanzania to Pongolo River in South Africa; Lakes Malawi, Rukwa, Rufiji and Ruvuma; Congo basin; on the western coast in the Quanza and the Nyanga, Tanganyika tributaries, Lake Kariba, Cunene River (Ref. 5331).
Diagnosis:	Anal spines: 3-3; Anal soft rays: 11-16. Parietal fontanel ponctiform in juveniles disappears in adults. Equal jaws. Sexual dimorphism on anal fins of males. Body silvery, greenish or brownish back, pale belly. Humeral and precaudal spots black. Zaire basins, Ghana and South Africa: rayed fins yellowish or reddish, adipose fin red. Zambeze and Rukwa: paired fins yellow, black adipose. Ivory Coast to Togo: rayed fins and adipose bright red, except in the Nipoué where the fins are of brown color. Gill rakers on first ceratobranch.
Biology:	Found in shallow and sheltered waters of swampy bays. Generally restricted to shallow waters where they may be found in various habitats such as over sand, rock or, less frequently, in aquatic weed beds (Ref. 13337). Common in shallow vegetated areas (Ref. 4967). Also found in large rivers and floodplain pans and lagoons. Feeds on insects, tiny fishes, vegetable matters (Ref. 5595) and crustaceans (Ref. 13337). Main predator is the tigerfish (Ref. 7248). Breeds in summer, migrating to spawning sites after rains. Migrates to tributary rivers and floodplains when the rivers come down in spate (Ref. 13337). Known to mass at river mouths while waiting for suitable conditions to trigger off the breeding migrations upstream (Ref. 13337). Used as live bait for tigerfish and large catfish (Ref. 13337). Affinities: B. carolinae, with lateral stripe; B. nigricauda with wide black margin on caudal fin
Threatened:	Not Evaluated, see IUCN Red List , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Paugy, D.. 1990. (Ref. 2880)
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Togo country information
Common names:	[ No common name ]	Ref:
Status:	native	Ref:
Salinity:	freshwater
Uses:	no uses
Comments:	Occurs in the Mono River (Ref. 13331).
Country Information:	www.cia.gov/cia/publications/factbook/geos/to.html
Occurrences:	Occurrences Point map
Main Ref:	Paugy, D., 1990
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Modified: Sa-a, Pascualita

Entered: Palomares, Maria Lourdes D.

CGNET - US

Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07

	Ref.:		Glossary
		(e.g. 9948)		(e.g. cephalopods)
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