Rwanda country information

Common names: Ikiraba, Inshoga, Victoria robber
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from Middle Akagera system; records of Alestes nurse (Rüppell, 1832) from the middle Akagera by Kiss (1977), Frank et al. (1984) and Plisnier et al. (1988) and of Brycinus imberi (Peters, 1852) by Paugy (1986) and Plisnier et al. (1988) refer to B. jacksonii.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/rw.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: De Vos, L., J. Snoeks and D.F.E. Thys van den Audenaerde, 2001
National Database:

Common names from other countries

Victoria kardsalmler, Ikiraba, Osoga, ... more

Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> 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 Ekologi

; sötvatten pelagiska; djupintervall 0 - 20 m (Ref. 34290). Tropical

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | 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 / Vikt / Age

Maturity: L_m ? range ? - ? cm
Max length : 27.0 cm SL hane/ej könsbestämd; (Ref. 34290); common length : 23.0 cm SL hane/ej könsbestämd; (Ref. 34290)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 0; Mjukstrålar i ryggfenan (totalt): 10; Taggstrålar i analfenan 0; Mjukstrålar i analfenan: 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).

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 Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Main reference Upload your references | referenser | Koordinator | Medarbetare

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 (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fiskeri:

FAO(Publication : search) | FishSource |

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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).

Trofisk nivå (Ref. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives

Resiliens (Ref. 120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (23 of 100).

Price category (Ref. 80766): Unknown.

Brycinus jacksonii (Boulenger, 1912)