Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce bentopelágico; pH range: 6.0 - 7.5; dH range: ? - 15; potamodromo (Ref. 51243). Subtropical; 22°C - 28°C (Ref. 1672)
Central and South America: southern Mexico to Paraguay, including Trinidad.
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm 19.4, range 25 - ? cm
Max length : 76.0 cm TL macho / no sexado; (Ref. 79585); peso máximo publicado: 1.2 kg (Ref. 79585)
Descripción breve
Claves de identificación | Morfología | Morfometría
Facultative air-breathing (Ref. 126274); Aggressive (Ref. 27188). Inhabits turbid slow moving or standing waters (Ref. 11225). Found also in shallow edges of streams (Ref. 75964). Can survive when ditches, canals and small ponds dry out. (Ref. 11225). Feeds mainly at night on worms, insects (e.g. odonate larvae), shrimps, fish (preferably small characids, e.g. Ctenobrycon and Curimata) and plant matter (Ref. 7020; 10011). Oviparous (Ref. 205). Mouth brooding by males is observed in this species (Ref. 55570). Males provide parental care in nests excavated for eggs and larvae (Ref. 55570). Uses its long anal fin for locomotion. Can distinguish between a `friendly neighbor' and a potentially `threatening stranger' based on electric organ discharge (EOD) waveform alone (Ref. 10011). Relationship between EOD pattern and agonistic behavior in this species has been demonstrated (Refs. 10531, 10532, 10533). Shows auditory abilities, responding best to a frequency of 1000 Hz, with an upper limit above 5000 Hz (Ref. 10831). Also responds to vibratory stimuli (water waves: 125-250 Hz) with transient increase in EOD rate (Ref. 10834). 'Prefers' temperatures of 24-25°C (Ref. 10836).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Parental care is provided by the male. The male sits on a depression with its anal fin expanded horizontally guarding a cluster of larvae. More larvae are spread out in leaf litter up to 2 m away (Ref. 55570).
Campos-da-Paz, R., 2003. Gymnotidae (Naked-back knifefishes). p. 483-486. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre EDIPUCRS, Brasil. (Ref. 36692)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: sin interés; Acuario: Comercial
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 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=0.00372 (0.00287 - 0.00481), b=2.93 (2.85 - 3.01), in cm total length, based on LWR estimates for this species (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.6 ±0.56 se; based on food items. |
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Generation time |
3.6 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies. |
Resiliencia (Referencia 120179) |
Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (tm=2). |
Vulnerabilidad pesquera (Ref. 59153) |
Moderate vulnerability (37 of 100). 🛈 |
Nutrientes (Ref. 124155) |
Calcium = 51.3 [21.6, 112.8] mg/100g; Iron = 0.975 [0.510, 1.782] mg/100g; Protein = 18.3 [17.1, 19.6] %; Omega3 = 0.33 [0.13, 0.83] g/100g; Selenium = 25.6 [9.8, 63.4] μg/100g; VitaminA = 21.8 [6.9, 67.1] μg/100g; Zinc = 1 [1, 1] mg/100g (wet weight); |