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

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

Freshwater; pelagic. Tropical

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Africa: Lower Guinea endemic, only known from the Kouilou River basin in the Republic of Congo (Ref. 81638).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.8 cm TL male/unsexed; (Ref. 7094)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 15 - 16; Anal spines: 0; Anal soft rays: 12 - 13. Diagnosis: 38-40 lateral line scales; 9-10 branched anal fin rays; mid-lateral pigmentation on body absent or at most irregular and not forming distinct band; dorsal portions of body without distinct vertically oriented dark marks that form saddle-shaped pigmentation pattern (Ref. 81638).

Maximum SL recorded is 37 mm (Ref. 81638).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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. 130435)

Endangered (EN) (B1ab(iii)+2ab(iii)); Date assessed: 16 February 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

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=0.00380 (0.00147 - 0.00981), b=3.11 (2.88 - 3.34), in cm total length, 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

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

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Nannocharax altus Pellegrin, 1930