The piracatinga, also known as the "water vulture" or urubu-d’água, is one of the Amazon’s most misunderstood and maligned catfish. Though relatively small in stature, this scavenging species has gained notoriety for its voracious feeding habits and unique ecological role. Found throughout the Amazon Basin, especially in whitewater rivers and floodplain lakes, piracatinga thrive in murky, oxygen-depleted environments where other fish may struggle. Their ability to detect carrion and decaying matter from afar has earned them a controversial reputation among locals—and even led to targeted bans on their harvest in certain regions due to unsustainable fishing practices involving dolphin and caiman bait.

Despite the controversy, piracatinga play an important role in Amazonian ecosystems. They help break down organic waste, feeding opportunistically on dead fish, invertebrates, and occasionally even seeds. They often form large schools near human settlements or floodplain zones, particularly during periods of lower water when food becomes concentrated. While not a glamorous gamefish, they provide a fascinating study of ecological adaptation and behavioral resilience in some of the Amazon’s most extreme aquatic habitats.