fishing in amazon river

10 Best Known Fish Species in the Amazon River: 1. fishing calendar The Arapaima (Arapaima gigas) It’s highly unlikely that you will catch one of these beasts, but nevertheless, the 2 Tambaqui (Colossoma macropomum) Also known as a Pacu, the Tambaqui fish is a seed and fruit-eating fish that is 3 Candiru