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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.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce pelagico. Tropical
South America: Uruguay.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 28.6 cm TL maschio/sesso non determinato; (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)..
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: di nessun interesse
Strumenti
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Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00112 - 0.00372), b=2.82 (2.65 - 2.99), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (19 of 100).
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