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Nannocharax ansorgii Boulenger, 1911

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Nannocharax ansorgii
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Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335).
Eponymy: Dr William John Ansorge (1850–1913) was an English explorer and collector who was active in Africa in the second half of the 19th century. [...] (Ref. 128868), visit book page.
More on author: Boulenger.

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

; eau douce pélagique; pH range: 7.0 - 7.8; dH range: ? - 15; potamodrome (Ref. 51243). Tropical; 22°C - 26°C (Ref. 13614)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Africa: upper basin of Senegal River and Gambia River, Geba and Culufi River (Guinea Bissau), Waanje River (Sierra Leone), Niger River, including Benue River, Bandama River (Côte d'Ivoire), Comoé River in Côte d'Ivoire and Burkina Faso, Volta River and Pra River (Ghana), and Chari Logone Chari-Logone in Chad-Cameroon-Central African Republic (Ref. 2936, 86396).

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 3.7 cm SL mâle / non sexé; (Ref. 2936)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Diagnosis: snout and anal fin short; head length 22.9-31.8% SL; scale formula 5-6/42-45/-; 13-16 scales around caudal peduncle; 1.5-3 scales between anus and anal-fin origin; development lateral line variable with geographical region; pectoral fins not reaching to pelvic-fin bases; dorsal-fin origin distinctly ahead of pelvic-fin insertions; 8-12 anal fin branched rays; 11-14 dorsal fin branched rays; 10-13 pectoral fin branched rays; 8-10 pelvic fin branched rays; back usually uniformly brown (sometimes with cross-bars); dark band covering mid-lateral series of scales, and extending unto central caudal-fin rays (Ref. 2936, 86396).

Biologie     Glossaire (ex. epibenthic)

Maximum TL was recorded at 4.6 cm (Ref. 7094).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Teugels, G.G., C. Lévêque, D. Paugy and K. Traoré, 1988. État des connaissances sur la faune ichtyologique des bassins côtiers de Côte d'Ivoire et de l'ouest du Ghana. Rev. Hydrobiol. Trop. 21(3):221-237. (Ref. 272)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-2)

  Préoccupation mineure (LC) ; Date assessed: 20 October 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial; Aquarium: Commercial
FAO - Publication: search | FishSource |

Plus d'informations

Trophic ecology
Éléments du régime alimentaire
Composition du régime alimentaire
Consommation alimentaire
Food rations
Prédateurs
Ecology
Écologie
Population dynamics
Paramètres de croissance
Max. ages / sizes
Length-weight rel.
Length-length rel.
Fréquences de longueurs
Mass conversion
Recrutement
Abondance
Life cycle
Reproduction
Maturité
Maturity/Gills rel.
Fécondité
Frai
Spawning aggregations
Œufs
Développement de l'œuf
Larves
Dynamique des populations larvaires
Distribution
Pays
Zones FAO
Écosystèmes
Occurrences
Introductions
BRUVS - Videos
Anatomy
Surface branchiale
Brain
Otolith
Physiology
Body composition
Nutrients
Consommation d'oxygène
Type de nage
Vitesse de nage
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Génétique
Heterozygosity
Héritabilité
Human related
Aquaculture systems
Profils d'aquaculture
Souches
Ciguatera cases
Stamps, coins, misc.
Outreach
Collaborateurs
Taxonomy
Noms communs
Synonymes
Morphologie
Morphométrie
Images
References
Références

Outils

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Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: génôme, nucléotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoobank | Zoological Record

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).
Niveau trophique (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
Catégorie de prix (Ref. 80766):   Unknown.