The gilded catfish or jau (Zungaro zungaro) is a South American catfish (order Siluriformes) of the family Pimelodidae. It is also known as manguruyu or black manguruyu.
This fish reaches 140 cm (55 in) in total length, and specimens measuring 130 cm (51 in) and weighing 50 kg (110 lb) are not rare. These fish are mainly piscivorous, hunt at night, and sometimes go into flood-prone areas of rivers. Some migrations in pursuit of migrating Triportheus and Anodus have been reported. The nursery ground is at the mouths of rivers.
They are sexually mature upon reaching 10 kg (22 lb) weight. This fish native to the Orinoco and Amazon basins; in the Amazon, this fish is found quite upstream, in the main bed of the big tributaries with muddy bottoms.
