Lithodoras

 ( Doradidae ) 

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 . When the Flooded forest, 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 fish measurement and a weight of up to .