Taxonomic Remarks
Redescribed in Ferraris & Vari (1999).
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce pelágico; pH range: 6.7 - 7.2; dH range: 7 - 16. Tropical; 20°C - 22°C (Ref. 2060)
South America: Lower Amazon and Tocantins rivers northward to Marowijne River. Possibly also Rupununi River in Guyana and Negro River in Brazil.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 27.0 cm SL macho / no sexado; (Ref. 26147)
Descripción breve
Claves de identificación | Morfología | Morfometría
Inhabits lower courses of the larger rivers. Free swimming species found near the surface. Nocturnal, plus active during dusk and dawn. Feeds on smaller fish. The male is recognizable by his thick, ossified maxillary barbels and by the first few rays of the anal fin which are fused, supporting the urogenyla tube that runs along the anterior border to the tip of the rays (Ref. 6868). This fish comprises the majority of the catches in the fish nets and is especially captured during the rainy season which is its reproductive period. Occurs less frequently in flood zones, prefers eroded zones where it appears in large numbers (Ref. 27188).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Ferraris, C.J. Jr., 2003. Auchenipteridae (Driftwood catfishes). p. 470-482. 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. 37098)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: escaso valor comercial; Acuario: Comercial
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00955 (0.00707 - 0.01290), b=3.00 (2.95 - 3.05), in cm total length, based on LWR estimates for this species (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.6 ±0.51 se; based on food items. |
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Generation time |
1.7 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
Resiliencia (Referencia 120179) |
Alto, población duplicada en un tiempo mínimo inferior a 15 meses (K=0.65). |
Vulnerabilidad pesquera (Ref. 59153) |
Low vulnerability (24 of 100). 🛈 |
Categoría de precios (Ref. 80766) |
Unknown.
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