Needs a large tank over 4' 0" in length as juveniles
and maybe larger as it grows into adulthood. It is
territorial towards conspecifics and similar fishes.
Provide hiding places with a large filtration capacity
capable of handling the high nitrogenous waste that
it will produce. Diet: Live foods,
earthworms, tablet, frozen and pellet foods. Remarks:
Still listed in Fishbase and some other online sites
as the synonym, Megalonema argentinum.
Paraná River basin, Argentina. Type
locality: Argentina, Rio Paraná, Posadas,
Territorio de Misiones.
22-28°C (71 -83°F)
Ferraris, C.J. Jr.,
2007. Checklist of catfishes, recent and fossil (Osteichthyes:
Siluriformes), and catalogue of siluriform primary
types. Zootaxa 1418:1-628. Froese, R. and D. Pauly. Editors.
2022. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 02/2022 ). Peces
Freshwater Fishes of Argentina and South America.