Lithodoras dorsalis, the Rock-bacu, is the only species in the genus Lithodoras of the catfish (order Siluriformes) family Doradidae. This species originates from the Amazon basin in Brazil and estuaries near Cayenne, French Guiana. These fish feed on the leaves of macrophytes. When the forests are flooded, they feed exclusively on fruits and seeds, acting as an agent of seed dispersal. Reproduction occurs once a year and juveniles are often seen in large numbers in the estuary of the Amazon. These fish reach a length of 100 centimetres (39 in) TL and a weight of up to 15 kilograms (33 lb).
- "Lithodoras dorsalis". Integrated Taxonomic Information System. Retrieved May 22, 2007.
- Froese, Rainer and Pauly, Daniel, eds. (2011). "Lithodoras dorsalis" in FishBase. December 2011 version.
- Kubitzki, Klaus; Ziburski, Albrecht (1994). "Seed Dispersal in Flood Plain Forests of Amazonia". Biotropica. The Association for Tropical Biology and Conservation. 26 (1): 30–43. doi:10.2307/2389108. JSTOR 2389108.
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