Fin's Fish Guide
The Rock-bacu (Lithodoras dorsalis) is a freshwater fish of the family Doradidae that grows up to 100 cm.
Description
The rock-bacu is a large thorny catfish (Doradidae) from the Amazon and Orinoco basins of South America. The species grows to about 100 cm and has a heavy, dark body with a row of bony, thorny plates (scutes) along the lateral line and three pairs of barbels. As a bottom-oriented omnivore it lives in large rivers and eats mainly plant material, fruit and seeds, supplemented with invertebrates. It is a locally important food fish. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Rock-bacu?
The Rock-bacu has an elongate, eel-like body, is mainly brown and shows a plain pattern. Row of bony thorn plates along the flank; fruit-eating giant catfish
Where does the Rock-bacu live?
The Rock-bacu lives in fresh water and is mostly found around sand or mud bottom. Amazon and Orinoco basins
How big does the Rock-bacu get?
The Rock-bacu grows to a maximum of about 100 cm.
Is the Rock-bacu dangerous to humans?
No, the Rock-bacu is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
Is the Rock-bacu edible?
Yes, the Rock-bacu is commonly eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
More from the family Doradidae
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Point your camera at the fish and Fin names the species in seconds. Free, and the Rock-bacu is one of 12,519 species in the app.