MANAUS, BRAZIL - Two “giant” black piranhas measuring about 40 centimeters were caught at Lake Miriti, in the municipality of Manacapuru, in the interior of Amazonas state, on Sunday afternoon (15). The fish were pulled from the water near a riverside bathing area while dozens of people were in the area.

According to local visitors, this is the third large specimen found in less than a week.

The black piranha (Serrasalmus rhombeus) is considered one of the largest and most aggressive fish species in the Amazon, reaching up to 50 centimeters in length and weighing as much as 4 kilograms. A video recorded by a witness shows the fisherman displaying the catch and commenting on its size.

Biologist and aquatic ecology specialist Edinbergh Caldas Oliveira, from the Federal University of Amazonas (Ufam), said the species feeds on other fish and that attacks on bathers are more common during the breeding season. In 2025, two incidents were reported at the same site, leaving several people injured, including children.

Authorities say that despite warning signs, many people ignore safety guidance and enter the river. Discarded food waste in the water also attracts piranhas.

Amazon Agency