Fishing in Parque Nacional Iberá

Parque Nacional Iberá sits in the center-north of Corrientes Province, covering roughly two million acres of one of the largest freshwater wetland systems in South America.

The water here is not a single river or lake but a mosaic — lagoons, shallow marshes, slow arroyos, and interconnected channels that spread across the landscape in every direction.

Understanding that geography matters before you go, because access, rules, and the fishing itself vary depending on which part of the park you're in. The species that draws most visiting anglers is dorado.

These fish move through the arroyos and lagoons of the western edge of the wetlands, where clear water and grass-lined banks give fly anglers room to work.

Portal Carambola and the Arroyo Carambola are the waters the park itself designates for fly fishing, and the fishing there is catch-and-release with artificial flies. The Río Corriente, which runs along the park's boundary, is another anchor water for dorado.

Fish in these systems typically run between 2 and 7 kilos, with larger fish possible on surface presentations. The season runs from September through May.

October, November, and December are peak months for dorado — water temperatures climb and the fish become aggressive. January through mid-March is productive but hot and humid, with daytime temperatures pushing into the upper 80s Fahrenheit.

April and May cool down considerably and can fish well with less pressure. Laguna Iberá, the large central lagoon, holds palometas (piranha) among other species, and fishing from a boat at dusk is how most people experience it.

The wildlife density throughout — yacarés, carpinchos, giant otters — is part of the context you're fishing in, not background scenery.

Inside the national park, fly fishing in designated waters requires following catch-and-release rules with barbless hooks and no live bait.

Check directly with the park for current permit requirements and any zone-specific restrictions before you go — the rules here are taken seriously, and they exist for good reason.