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

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

Freshwater; pelagic; pH range: 6.2 - 7.2; dH range: 6 - 18; potamodromous (Ref. 51243). Tropical; 22°C - 27°C (Ref. 12468)

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

Africa: Niger River, Cross River and Chari-Logone (Ref. 86396).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.8 cm SL male/unsexed; (Ref. 2936)

Short description Identification keys | Morphology | Morphometrics

Diagnosis: body very elongate; head length 3.9-4.4x SL; scale formula 4.5-5.5/49-54/-; 7-8 scales between anus and anal-fin base; 14-16 scales around caudal peduncle; 10-12.5 scales between posterior end of adipose and caudal fin base; pectoral fins usually extend beyond pelvic-fin bases; dorsal-fin origin behind level of pelvic-fin insertions; 9-10 anal fin branched rays; 13-14 dorsal fin branched rays; 13-16 pectoral fin branched rays; 9-10 pelvic fin branched rays; fins, including adipose fin, colourless, but often dark spot at base of each caudal-fin lobe and small spot in antero-dorsal region of dorsal fin; 7-11 cross-bars present on back; 4-7 separate spots along lateral line (Ref. 2936, 86396).

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

Main reference Upload your references | References | Coordinator | Collaborators

Gosse, J.-P. and E.J. Coenen, 1990. Distichodontidae. p. 237-260. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres de l'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. 2936)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 11 May 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquarium: commercial

FAO - Publication: search | FishSource |

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Internet sources

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=0.00447 (0.00189 - 0.01058), b=3.17 (2.96 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives

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

Price category (Ref. 80766): Unknown.

Nannocharax occidentalis Daget, 1959