Brachyplatystoma rousseauxii

Brachyplatystoma rousseauxii, the gilded catfish or dourada, is a species of catfish of the family Pimelodidae that is native to Amazon and Orinoco River basins and major rivers of French Guiana.

Named in honor of Louis Rousseau (1811-1874), assistant naturalist, Muséum d’histoire naturelle in Paris.

Distribution
It is a much widespread species that is found in fluvial systems in the Guianas and northeastern Brazil and Amazon and Orinoco river drainage.

Description
It grows to a length of 192 cm. Body is characterized by platinum head and gold body. Adults have short barbels. Caudal-fin in adults deeply-forked with narrow lobes.

It is entirely piscivorous.

Ecology
It is a demersal fish commonly inhabits deeper, flowing channels. Juveniles and sub adults are migratory. It is considered to have the longest freshwater migration of any known fish species