This website uses cookies to enhance your browsing experience and ensure the functionality of our site. For more detailed information about the types of cookies we use and how we protect your privacy, please visit our Privacy Information page.
×
Cookie Settings
This website uses different types of cookies to enhance your experience. Please select your preferences below:
South America: Amazon and Orinoco River basins; north and eastern Guiana Shield rivers.
Tamaño / Peso / Edad
Madurez: Lm? range ? - ? cm Max length : 41.5 cm TL macho / no sexado; (Ref. 111518); peso máximo publicado: 2.5 kg (Ref. 27188)
Gregarious and non-aggressive (Ref. 27188). Individuals prefer calm zones of main rivers where the vegetation hangs over the river banks. Migratory behaviour is undetermined (Ref. 126106). Adults feed on the leaves of river plants (Ref. 12225). They possess powerful dentition that can cause serious bites. Reproduction has not yet been carried out in captivity (Ref. 27188).
Ciclo vital y comportamiento de apareamiento Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
The red hooked anal fin of the female is actually a plough. The male has a bilobed anal fin which is designed to wrap around the female's "hook". During spawning, the female inserts the hook into the substrate (e.g., gravel) and ploughs a furrow while laying the eggs with the male in a position next to her with his bi-lobed fin wrapped around the hook as he fertilises the eggs. The female's "hook" is suprisingly strong and can be pushed into coarse gravel (up to the anal opening) without any problem with a shaking body action, the male's bilobed hook folds under the same pressure so they can work in unison (Ref. 55767).
Dinámica de la población Coeficiente del crecimiento para Edades / tallas máximas Longitud-peso rel. Longitud-longitud rel. Longitud-frecuencias Conversión de masas Reclutamiento Abundancia
Ciclo de vida Reproducción Madurez Madurez/Gills rel. Fecundidad Puesta Agregaciones de desove Huevos Desarrollo de los huevos Larva Dinámica larvaria
Fisiología Composición corporal Nutrientes Consumo del oxígeno Tipo de natación Velocidad de natación Pigmentos visuales Sonido de peces Enfermedades y parásitos Toxicidad (CL50)
Índice de diversidad filogenética (Referencia 82804): PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02344 (0.01389 - 0.03957), b=2.97 (2.82 - 3.12), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Nivel trófico (Referencia 69278): 2.0 ±0.00 se; based on food items.
Resiliencia (Referencia 120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).
Vulnerabilidad pesquera (Ref. 59153): Low to moderate vulnerability (32 of 100). 🛈
