Klassifizierung / Names
Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa
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Gymnotiformes (Knifefishes) >
Gymnotidae (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335); onca: Named for the jaguar Panthera onca, referring to the characteristic color pattern of broad irregular dark pigment blotches. Noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Ökologie
; süßwasser demersal. Subtropical
South America: upper Amazon River basin, Brazil.
Size / Gewicht / Alter
Maturity: Lm ?  range ? - ? cm
Max length : 12.0 cm TL Männchen/unbestimmt; (Ref. 36692)
Kurzbeschreibung
Bestimmungsschlüssel | Morphologie | Morphometrie
Possess broad irregular dark pigment blotches without alternating light and dark pigments bands and very short head (head length 8.8% TL versus 9-13).
Facultative air-breathing in the genus (Ref. 126274); Collected in a whitewater floating meadow of the floodplain in the Tefé region (Ref. 41292).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
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)
IUCN Rote Liste Status (Ref. 130435: Version 2024-1)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00204 - 0.00890), b=2.99 (2.80 - 3.18), 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
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).