Brycinus imberi (Peters, 1852)

Spot-tail

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Characiformes \| Alestidae
Synonyms	Alestes imberi, Brachyalestes imberi, Brachyalestes imberi imberi, ... more
Common names	Characin, Punaevätetra, Dabé, ... more

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Main reference

Paugy, D. 1990. (Ref. 2880)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 19.8 cm TL male/unsexed; (Ref. 2880); max. published weight: 300 g (Ref. 7248); max. reported age: 5 years (Ref. 7248)

Environment

Demersal; potamodromous (Ref. 51243); freshwater; pH range: 6.0 - 6.5; dH range: 4 - 18

Climate / Range

Tropical; 22°C - 26°C (Ref. 1672); 23°S - 31°S

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).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Anal spines: 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.

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.


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses
Fisheries: subsistence fisheries; aquarium: commercial; bait: usually


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Biogeographic modelling \| Bio-Quiz \| E-book \| Field guide \| Identification keys \| Length-frequency wizard \| Life-history tool \| LifeMapper \| Point map

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (K=1.4; tmax=5)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (10 of 100)	Not marketed/unknown

Entered by Cruz, Tess

Modified by Willemse, Nico E.

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Page last modified by : elaxamana, 15 July 2009

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