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> Gymnotiformes (Knifefishes) > Gymnotidae (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335); omarorum: Named for Omar Macadar and Omar Trujillo-Cenoz, pioneers in the anatomical and physiological study of electrogenesis in Gymnotus.
Eponymy: The two people after whom this species is named are Omar Macadar and Omar Trujillo-Cenoz, both of whom are Uruguayan scientists and pioneers in the study of the anatomy and physiology of electrogenesis in knifefishes and who have worked closely [...] (Ref. 128868), visit book page.

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

; eau douce pélagique. Tropical

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri

South America: Uruguay.

Taille / Poids / Âge

Maturité: L_m ? range ? - ? cm
Max length : 28.6 cm TL mâle / non sexé; (Ref. 118108)

Facultative air-breathing in the genus (Ref. 126274); Found in submerged stems and roots of aquatic vegetation in lakes and small streams. Its type locality has the following water parameters: electrical conductivity 170-190 µS/cm, pH 7.6-7.8, temperature 23-28°C. Possibly with paternal brood care (Ref. 82430)..

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

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

Richer-de-Forges, M.M., W.G.R. Crampton and J.S. Albert, 2009. A new species of Gymnotus (Gymnotiformes, Gymnotidae) from Uruguay: description of a model species in neurophysiological research. Copeia 2009(3):538-544. (Ref. 82430)

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

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

Pêcheries: sans intérêt

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Réf. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00204 (0.00114 - 0.00365), b=2.81 (2.64 - 2.98), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

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

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

Fishing Vulnerability (Ref. 59153): Low vulnerability (19 of 100). 🛈

Gymnotus omarorum Richer-de-Forges, Crampton & Albert, 2009