Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water demersaal; potamodroom (Ref. 51243). Tropical; 24°C - 26°C (Ref. 12468)
Africa: mainly in Niger and Bénoué basins (Ref. 2940, 81282), but also in Moa, Cavally, Sassandra, Bandama, and Comoé Rivers (Côte d'Ivoire), Pra River (Ghana) and Cross River (Nigeria, Cameroon) (Ref. 2940, 81282, 81639).
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 11.1 cm SL mannelijk / geslacht onbekend; (Ref. 81639)
Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 11; Anale stekels: 0; Anale zachte stralen: 16 - 18. Diagnosis: body depth 3.5-5.3x and head length 4.2-5.1x SL; eye diameter 2.8-3.5x head length (Ref. 2940, 81282). Scale formula: 7.5-8.5/41-46/(3.5)4.5(5.5); 14 scales around caudal peduncle; 8 dorsal-fin branched rays; 13-15 anal-fin branched rays (Ref. 2940, 81282, 81639).
Affinities: may be sympatric with R. senegalensis and R. steindachneri and has always been mistaken for R. senegalensis, which is the reason for it not being discovered. Maximum TL was recorded at 12.5 cm (Ref. 2801).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
Lévêque, C., 1990. Cyprinidae. p. 269-361. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres d'Afrique de l'Ouest. Tome I. Coll. Faune Tropicale n° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren, and O.R.S.T.O.M., Paris, 384 p. (Ref. 2940)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00282 - 0.01229), b=3.02 (2.84 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).