The fish, identified as an Arapaima gigas, also known as a pirarucu, splashes back into the water without breaking the line as the video clip ends. Edmar said the experience was thrilling.

The season runs from June 1 to Nov. 30. Pirarucu managed fishing began in the Amazon 25 years ago in the Mamiraua region and has since expanded. It helped the Amazon’s largest fish escape risk ...