An increase in fish attacks has partially closed Praia da Figueira, a major tourist destination in Bonito, Brazil.

Known as the country's ecotourism capital, Bonito reported at least 30 cases of fish bites in 2025, Adele Cardin of the Rio Times reports. Most incidents occurred in the artificial lagoon of Praia da Figueira, where visitors observe the fish. The tambaqui, an Amazonian species with strong teeth, has caused serious injuries

The management of the lagoon is under scrutiny for introducing tambaquis into the area, a move that experts call an environmental violation. Stress and human feeding behavior are likely triggering the fish's aggression. One of the victims, a retired teacher, lost part of a finger, while another needed nine stitches in his hand.

The Environmental Institute of Mato Grosso do Sul ordered the closure of the lagoon. Authorities demanded physical barriers to block access to the water and educational efforts to warn visitors.

Activities on land have resumed, but water areas remain off limits until safety measures are implemented. Bonito authorities are also investigating possible environmental violations, including the diversion of water from the Formoso River to fill the lagoon.