Common names from other countries
Classification / Names
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Siluriformes (Catfishes) >
Pimelodidae (Long-whiskered catfishes)
Etymology: Megalonema: Greek, megas, megalos = great + Greek, nema = filament (Ref. 45335); amaxanthum: The specific name refers to the distribution of the species in the Amazon basin and its relationship to the species Megalonema xanthum..
Environment: milieu / climate zone / depth range / distribution range
Ecología
; agua dulce demersal. Tropical
South America: Amazon River basin, Brazil, Guyana, Peru, Bolivia and probably Colombia and Ecuador.
Tamaño / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 24.1 cm SL macho / no sexado; (Ref. 125983); 31.2 cm SL (female); peso máximo publicado: 221.09 g (Ref. 125983); peso máximo publicado: 221.09 g
Short description
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 1; Radios blandos dorsales (total) : 7; Radios blandos anales: 12 - 16; Vértebra: 42 - 45. Total vertebrae including Weberian complex (Ref. 79495).
Life cycle and mating behavior
Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva
Lundberg, J.G. and W.M. Dahdul, 2008. Two new cis-Andean species of the South American catfish genus Megalonema allied to trans-Andean Megalonema xantum, with description of a new subgenus (Siluriformes: Pimelodidae). Neotrop. Ichthyol. 6(3):439-454. (Ref. 79495)
IUCN Red List Status (Ref. 130435)
CITES (Ref. 128078)
Not Evaluated
Threat to humans
Harmless
Human uses
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00501 - 0.01204), b=3.18 (3.05 - 3.31), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Nivel trófico (Ref.
69278): 4.0 ±0.7 se; based on size and trophs of closest relatives
Resiliencia (Ref.
120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (28 of 100).