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> Gymnotiformes (Knifefishes) > Gymnotidae (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335).

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

; eau douce benthopélagique. Tropical; 22°C - 28°C (Ref. 13614)

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South America: Southern part of Venezuela, including Territorio Amazonas and south of Estado Apure; also known from tributaries of Rio Negro in Brazil.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 28.1 cm TL mâle / non sexé; (Ref. 26457)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 0; Rayons mous dorsaux (Total) : 0; Rayons mous anaux: 222 - 290; Vertèbres: 96 - 99. Distance between tip of pectoral fin and origin of anal fin less than one pectoral fin length; dark oblique bands on body 18-30 (usually below 30); dark and pale oblique bands with straight borders; greatest body depth 7-11% in total length; eye diameter 33-43% of interocular distance; head length 68-78% of preanal fin distance; maximum scale rows above lateral line 12-13; precaudal vertebrae 31-32; caudal vertebrae 65-67.

Facultative air-breathing in the genus (Ref. 126274)

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

Mago-Leccia, F., 1994. Electric fishes of the continental waters of America. Fundacion para el Desarrollo de las Ciencias Fisicas, Matematicas y Naturales (FUDECI), Biblioteca de la Academia de Ciencias Fisicas. Matematicas y Naturales, Caracas, Venezuela. vol. 29 . 206 p. (Ref. 26457)

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

Préoccupation mineure (LC) ; Date assessed: 13 August 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Résilience (Ref. 120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (18 of 100).

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Gymnotus pedanopterus Mago-Leccia, 1994