Teleostei (teleosts) >
Cypriniformes (Carps) >
Cyprinidae (Minnows or carps) > Torinae
Eponymy: Harry Royle was an agent with the Liverpool firm Hutton and Cookson, whose ‘warm welcome’ (translation) and other services (unspecified) greatly assisted the explorer William John Ansorge (1850–1913), who collected the barb holotype. (Ref. 128868), visit book page.
More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
Africa: Lower Guinea endemic, known from the Chiloango (Ref. 2801, 81639, 120641) and the Kouilou River basins (Ref. 81639).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 55.0 cm TL male/unsexed; (Ref. 81639)
Dorsal soft rays (total): 12; Anal soft rays: 8 - 9. Diagnosis: mouth inferior; lips extremely well-developed; two pairs of well-developed barbels, anterior pair 1-1.3, posterior pair 1.3-2x eye diameter; last simple ray of dorsal fin ossified, measuring 0.5-0.67x HL (Ref. 81639).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lévêque, C. and J. Daget, 1984. Cyprinidae. p. 217-342. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 2801)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
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Internet sources
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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100).