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

> Gymnotiformes (Knifefishes) > Gymnotidae (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335); mamiraua: Named for the Mamirauá lake system and the Mamirauá Sustainable Development Reserve (formerly the Estaçao Ecológica Mamirauá). Noun in apposition..

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

; eau douce démersal; pH range: 6.9 - 7.3. Subtropical

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

South America: two whitewater lake systems on the Rio Solimões floodplain of central Amazonia (the Mamirauá lake system near Tefé, and Lago Janauacá near Manaus), Amazonas State, Brazil (Ref. 41292).

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 24.3 cm TL mâle / non sexé; (Ref. 41292); poids max. publié: 40.00 g (Ref. 41292)

Description synthétique Morphologie | Morphométrie

Deep body (body depth 11-13% TL versus 6-10) possessing very thin pale bands (less than 1/5 the width of the dark bands) with sharp (high contrast) margins. Bands are sinuous on the anterior half of the body, and extend clearly to the dorsal midline (Ref. 41292).

Facultative air-breathing in the genus (Ref. 126274); Oviparous (Ref. 205). Males provide parental care in nests excavated for larvae (Ref. 55570).

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

Parental care is provided by the male. Nests consisted of a group of small juveniles under a dense roots of floating macrophytes which are attended by a single male adult (Ref. 55570).

Référence principale Upload your references | Références | Coordinateur : Campos-da-Paz, Ricardo | Collaborateurs

Albert, J.S. and W.G.R. Crampton, 2001. Five new species of Gymnotus (Teleostei: Gymnotiformes) from an upper Amazon floodplain, with descriptions of electric organ discharges and ecology. Ichthyol. Explor. Freshwat. 12(3):241-266. (Ref. 41292)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

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Gymnotus mamiraua Albert & Crampton, 2001