Dorsal spines (total): 1; Dorsal soft rays (total):
6; Anal soft rays: 13 - 14. Body elongated, without
scales, almost covered with bony plaque, ventrally
flattened in adults. Terminal mouth has three pairs
of barbels. Lower jaw is shorter than the upper jaw.
Eyes small. Diet: Feeds on fruits
when the forests are flooded and on the blades of
macrophytes (aquatic plants, growing in or near water
that are either emergent, submergent, or floating).
Acts as seed dispersal agent. Reproduction:
Occurs once a year and juveniles are often seen in
large numbers in the estuary of the Amazon, in the
region of Mario.
Amazon River basin and estuary near Cayenne, French
Le Bail, P.-Y., P.
Keith and P. Planquette
2000 Atlas des poissons d'eau douce de Guyane (tome
2, fascicule II). Publications scientifiques du Muséum
national d'Histoire naturelle, Paris: 307 p. Burgess, W.E. 1989 An atlas of freshwater
and marine catfishes. A preliminary survey of the
Siluriformes. T.F.H. Publications, Inc., Neptune City,
New Jersey (USA). 784 p. Froese, R. and D. Pauly. Editors.
2009. FishBase. World Wide Web electronic publication.
www.fishbase.org, version (12/2009).