The filming of Rio de Gigantes and the search for Amazon’s giant peacock bass took Todd Moen to Rio Negro Basin’s Rio Marié in the heart of the Brazilian Amazon Rainforest. Rio Marié is the first river in the Amazon Basin where the Brazilian Government collaborated with local Native Communities (the Baré and Tukano tribes) and Untamed Angling to develop a project protecting the 800 km wildlife preserve, while promoting catch-and-release fly fishing only. This protected area is more than 400 miles of virgin waters full of giant peacock bass. Rio Marié is known to hold at least twice the quantity of trophy-sized peacock bass compared with any other sport fishing destination in the Rio Negro basin.