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Gymnotiformes (Knifefishes) >
Apteronotidae (Ghost knifefishes) > Apteronotinae
Etymology: Apteronotus: Greek, apteros = without wings / (in this cases, fins) + Greek, noton = back (Ref. 45335).
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico. Tropical; 24°C - 28°C (Ref. 2059)
South America: the Guianas, Brazil and Peru; rivers of Colombia and Venezuela, including the Catatumbo River.
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm 13.0, range 13 - ? cm
Max length : 26.9 cm TL maschio/sesso non determinato; (Ref. 36886)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Dorsal fin reduced to a dorsal filament;
Body shape (shape guide): elongated.
Prefers fast flowing rivers (Ref. 26543). Forms loosely associated groups in rocky habitats or river banks (Ref. 10605). Nocturnal (Ref. 26543). Each individual fish possesses a unique spatiotemporal pattern of electric organ discharge (EOD) potentials distributed over the body surface (Ref. 10595). Chirps and EOD frequency modulations are important elements of courtship behavior and are sensitive to testosterone levels (Ref. 10011, 10883). Seems to reach sexual maturity at 1 year of age, based on breeding experiments (Ref. 10011). Tuberous electro receptors are differentiated and functional in larvae at day 9; electric organ and electro receptors both present in the larvae at the time of first exogenous feeding (Ref. 10605).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Eggs of about 3 mm diameter are deposited in crevices. Several days up to 2-3 weeks between batch spawnings. Larvae hatch after 4 days and start feeding on day 11.
Ortega, H. and R.P. Vari, 1986. Annotated checklist of the freshwater fishes of Peru. Smithson. Contrib. Zool. (437):1-25. (Ref. 6329)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00347 (0.00141 - 0.00851), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.3 ±0.3 se; based on size and trophs of closest relatives |
Resilienza (Fonte Biblio. 120179) |
Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (tm=1). |
Vulnerabilità della pesca (Ref. 59153) |
Low vulnerability (20 of 100). 🛈 |