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> Cypriniformes (Carps) > Danionidae (Danios) > Chedrinae

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

; süßwasser benthopelagisch. Tropical

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Africa: lower reaches of Little Scarcies River and Waanje River in Sierra Leone (Ref. 2940, 81282).

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 15.4 cm SL Männchen/unbestimmt; (Ref. 2940)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenweichstrahlen (insgesamt) : 11; Afterflossenweichstrahlen: 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 Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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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 Rote Liste Status (Ref. 130435: Version 2024-2)

Daten mangelhaft (DD) ; Date assessed: 11 May 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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=0.00617 (0.00294 - 0.01293), b=2.99 (2.81 - 3.17), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Raiamas scarciensis Howes & Teugels, 1989