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Brycinus imberi  (Peters, 1852)

Spot-tail
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Image of Brycinus imberi (Spot-tail)
Brycinus imberi
Picture by Gratwicke, B.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Alestidae (African tetras)
Etymology: Brycinus: Greek, ebrykon, brykomai = to bite, to gnaw (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; demersal; pH range: 6.0 - 6.5; dH range: 4 - 18; potamodromous (Ref. 51243).   Tropical; 22°C - 26°C (Ref. 1672); 23°S - 31°S

Length at first maturity / Size / Weight / Age

Maturity: Lm 9.3  range ? - ? cm
Max length : 19.8 cm TL male/unsexed; (Ref. 2880); max. published weight: 300.00 g (Ref. 7248); max. reported age: 5 years (Ref. 7248)

Short description Morphology | Morphometrics

Anal spines: 0; Anal soft rays: 14 - 18. Diagnosis: parietal fontanella absent in adults and porelinke in juveniles, disappearing with growth; snout short, comprised over three times in head length; dorsal-fin origin at same level as, or scarcely behind, pelvic-fin insertions; head narrow; adults medium-sized; sexual dimorphism affecting anal-fin shape in adult males; no band or spots on sides; caudal fin red, not black-edged; 4.5 scales between lateral line and dorsal fin; 21-31 lateral line scales; 11-16 anal fin branched rays; 8/8 premaxillary teeth; 16-20 gill rakers in lower part of first branchial arch (Ref. 2880, 81279).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: Mono River in Togo to Nipoué River in Liberia (Ref. 2880, 81279). Also in 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).

Biology     Glossary (e.g. epibenthic)

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.

Main reference Upload your references | References | Coordinator | Collaborators

Paugy, D., 1990. Characidae. p. 195-236. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres de l'Afrique de l'Ouest. Tome I. Coll. Faune Tropicale n° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren et O.R.S.T.O.M., Paris, 384 p.

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: subsistence fisheries; aquarium: commercial; bait: usually
FAO(Publication : search) | FisheriesWiki | Sea Around Us

More information

Countries
FAO areas
Ecosystems
Occurrences
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Ecology
Diet
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Ration
Common names
Synonyms
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Predators
Ecotoxicology
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Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
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Morphometrics
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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=-1.84000 (nan - nan), b=2.97 (2.91 - 3.03), based on LWR estimates for this species (Ref. 93245).
Trophic Level (Ref. 69278):  3.3   ±0.48 se; Based on food items.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (K=1.4; tmax=5).
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .
Price category (Ref. 80766):   Unknown.