Argentina is home to some of the best fly fishing in the world, particularly for trout and dorado. The Andes mountains provide crystal clear streams and rivers ideal for fly fishing. The season for fly fishing in Argentina typically runs from November to April, with the peak season being December through February. Some popular fly fishing destinations in Argentina include the Patagonia region, the Rio Limay, and the Rio Grande. It is important to note that a fishing license is required to fish in Argentina, and it is recommended to hire a local guide to ensure a successful and safe trip.