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Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335). More on author: Pellegrin.

Environment / Climate / Range Ecology

Freshwater; pelagic; pH range: 6.5 - 7.5; dH range: ? - 25. Tropical; 22°C - 26°C (Ref. 2060), preferred ?

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: occurs in the Ogowe to Chiloango Rivers (Ref. 81638). Also reported from the marine lower Congo River (Ref. 80507) in Democratic Republic of the Congo. Report from the Inkisi River probably based on a locality error (Ref. 88779).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.3 cm SL male/unsexed; (Ref. 81638)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 13-16; Anal spines: 0; Anal soft rays: 9 - 13. Diagnosis: anal fin with 2 unbranched and 7-11 branched rays; head and body with dark band along mid-lateral surface from snout to at least rear of caudal peduncle (Ref. 81638).

Maximum TL was recorded at 4.2 cm (Ref. 7094).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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Vari, R.P., 2007. Distichodontidae. p. 412-465. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81638)

IUCN Red List Status (Ref. 109396)

Least Concern (LC)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries:

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00380 (0.00147 - 0.00985), b=3.11 (2.88 - 3.34), based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic Level (Ref. 69278): 3.1 ±0.4 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

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

Price category (Ref. 80766): Unknown.

Nannocharax parvus Pellegrin, 1906