The piraiba is a giant catfish found in the Amazon. These guys are so big that they have, on one or two occasions, eaten a person. They have found shoes, watches, and even bones in their stomachs. These guys are enough to make those who have caught 13 pound bass shut their faces. See, my website is constructive! Piraibas have been known to weigh up to 450 pounds! In the crazy ancient Indian times, they found these one of the seven "terrors of the Amazon. Congratulate them. In the Amazon River, they eat fish, baby crocodiles, and rodents that fall or swim in the water.