Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
Africa: lower reaches of Little Scarcies River and Waanje River in Sierra Leone (Ref. 2940, 81282).
Μέγεθος / Βάρος / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.4 cm SL αρσενικό/απροσδιόριστο; (Ref. 2940)
Μαλακές ραχιαίες ακτίνες (συνολικά) : 11; Μαλακές εδρικές ακτίνες: 16 - 18. Diagnosis: body depth 4.5-6.3x and head length 4.0-5.0x SL; eye diameter 3.9-4.0x head length; scale formula 8.5-10.5/54-58/4.5-5.5; 8.5-10.5 scales between lateral line and dorsal fin origin; 54-58 scales in longitudinal series; 18 scales around caudal peduncle; 8 dorsal-fin branched rays; 13-15 anal-fin branched rays; usually 16 or 17 vertical bars on sides; known from some coastal basins in Sierra Leone (Ref. 2940, 81282).
Affinities: very close to R. senegalensis (less vertical bars).
Life cycle and mating behavior
Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (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).
Τροφικό Επίπεδο (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref.
120179): Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).