Teleostei (teleosts) >
Gymnotiformes (Knifefishes) >
Gymnotidae (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Southern Venezuela, including Venezuelan Guiana and Territorio Amazonas.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.2 cm TL male/unsexed; (Ref. 26457)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal soft rays: 199 - 226. Eye diameter is 20-30% of interocular distance; head length 60-66% of preanal fin distance; maximum body depth 7-9% in total length; maximum scale rows above lateral line 8-9; precaudal vertebrae 42-43; caudal vertebrae 53-57.
Facultative air-breathing in the genus (Ref. 126274)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
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