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Brycinus jacksonii (Boulenger, 1912)

Victoria robber
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Image of Brycinus jacksonii (Victoria robber)
Brycinus jacksonii
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Characiformes (Characins) > Alestidae (African tetras)
Etymology: Brycinus: Greek, ebrykon, brykomai = to bite, to gnaw (Ref. 45335).
More on author: Boulenger.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; pelagic; depth range 0 - 20 m (Ref. 34290). Tropical

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

Africa: Lake Victoria (and at least some affluent streams and rivers), Lake Nabugabo, Malawa River, Victoria Nile (Ref. 34290, 104654) and Middle Akagera drainage (Ref. 46152).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 27.0 cm SL male/unsexed; (Ref. 34290); common length : 23.0 cm SL male/unsexed; (Ref. 34290)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 10; Anal spines: 0; Anal soft rays: 18 - 19. Anal fin margin of females straight or very slightly concave; markedly convex in males (individual rays are stouter and coarser than those of females). Silver, bluish-grey to black-blue dorsally. Large black blotch on the caudal peduncle, with narrow extension on the caudal fin; round black spot behind the head. Dorsal fin grey, adipose dorsal fin orange. All fins grey in color; other specimens all yellowish (except for pectorals). Anal and pelvic fins of a faint orange tinge or grey with a faint yellowish sheen (Ref. 34290).

Biology     Glossary (e.g. epibenthic)

In Lake Victoria confined to shallow coastal areas (Ref. 34290, 104654), in water less than 20 m deep (Ref. 12526, 34290). Omnivore, feeding on aquatic plants, surface insects and small fishes, and sometimes on molluscs (Ref. 4903, 12526, 104654). Known to run up rivers and streams in Lake Victoria during rainy season (Ref. 4903). Apparently rare since introduction of Lates (Ref. 4967).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

van Oijen, M.J.P., 1995. Appendix I. Key to Lake Victoria fishes other than haplochromine cichlids. p. 209-300. In F. Witte and W.L.T. van Densen (eds.) Fish stocks and fisheries of Lake Victoria. A handbook for field observations. Samara Publishing Limited, Dyfed, Great Britain. (Ref. 34290)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 24 September 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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References

Tools

E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Public aquariums | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search |
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World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01230 (0.00541 - 0.02797), b=2.99 (2.81 - 3.17), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (23 of 100).