Iberá is unlike anywhere else in Argentina — a subtropical inland sea of marsh, lagoon and floating island the size of a small country, and the stage for South America’s greatest rewilding story, where jaguars once again prowl wetlands they had vanished from for seventy years. For the fly fisher it is also the frontier of the golden dorado, hunted sight-fishing style in shallow, clear water. This is the complete guide to Iberá National Park: its wetland and its wildlife, the return of the jaguar, the dorado fishing, and how to visit.
One of the world’s great wetlands
The Esteros del Iberá are among the largest freshwater wetlands on earth — a vast, dead-flat mosaic of shallow lagoons, reed beds, floating islands (embalsados) and palm savanna in the heart of Corrientes. The national park, created in 2018, together with the surrounding provincial reserve forms the Gran Parque Iberá, protecting a habitat that shelters some 4,000 species — nearly a third of all the plants and animals recognised in Argentina. It is a Ramsar wetland of international importance and one of the country’s premier wildlife destinations.
The return of the jaguar — a rewilding wonder
Iberá is the site of the most ambitious rewilding project in the Americas. From 1998, Rewilding Argentina (born of Tompkins Conservation) began buying up old cattle ranches to stitch together a great park and bring back species lost to hunting and habitat loss. One by one they returned: the giant anteater, the pampas deer, the collared peccary, the giant otter, the red-and-green macaw — and, in 2020, the jaguar (yaguareté), free in these wetlands for the first time in seventy years. Today a growing population of jaguars once again roams the Gran Iberá, making the park a living symbol of ecological restoration.
The wildlife and how to visit
Iberá offers some of the most accessible wildlife watching in South America. From the main gateway village of Colonia Carlos Pellegrini, on the shore of Laguna Iberá, boat and canoe safaris glide among capybaras, caimans (yacaré), marsh deer, howler monkeys and more than 350 species of birds, from jabiru storks to roseate spoonbills. The park is entered through a ring of access portales — Carlos Pellegrini, Cambyretá, Galarza, San Nicolás and others — each opening onto a different corner of the wetland, with night walks, horseback rides and a real chance of extraordinary sightings.
Golden dorado fly fishing in Iberá
Iberá is fabled among fly fishers for the golden dorado — the gold-armoured “river tiger” that hunts in the wetland’s shallow, clear water, sight-fished and taking a fly with an explosive, savage grab. But the fishing here is tightly managed, and it is important to understand the rules:
- Fly-only and strict, mandatory catch-and-release — every dorado goes back.
- Only in authorised sectors: within the Iberá reserve, sport fishing is permitted only in designated areas such as the Naciente del Río Corriente (the river’s headwaters) and Concepción del Yaguareté Corá — not in the protected core.
- With a local guide and a valid Corrientes fishing licence, and subject to the province’s summer spawning closure (veda).
For the wider dorado fishery — including the big fish of the Upper Paraná — and how to plan a trip, see our guide to golden dorado fishing in Corrientes & the Iberá.
When to go
Wildlife watching is rewarding year-round, though the cooler, drier months are the most comfortable in this subtropical climate. For dorado, the best fishing is generally the cooler, lower-water months (roughly autumn to spring), when water clears and fish concentrate — and outside the summer veda. Confirm the current closed-season dates, which change each year. See our guide to the best time to fly fish Argentina.
Entry and access
Unlike the Andean national parks, Iberá is generally free to enter through its portales — there is no Andean-style access fee, though services, guides and boat trips are of course paid locally. A fishing licence is required to fish and is separate from park access. (Access arrangements can change, so confirm current details with the park.)
Getting there and where to base
The classic base is Colonia Carlos Pellegrini, reached by road from the town of Mercedes (about three hours from the airports at Corrientes or Posadas, which connect through Buenos Aires). Lodges and posadas in and around Pellegrini arrange the wildlife excursions and, in the authorised sectors, the fishing.
Frequently asked questions about Iberá National Park
Where is Iberá National Park?
In Corrientes province, in the subtropical north-east of Argentina. It protects the Esteros del Iberá, one of the largest wetlands on earth, and is usually visited from Colonia Carlos Pellegrini, reached via the town of Mercedes.
What is the Iberá rewilding project?
Since 1998, Rewilding Argentina (from Tompkins Conservation) has restored a vast park and reintroduced species lost to the region — the giant anteater, pampas deer, giant otter, macaws and, in 2020, the jaguar, back in the wetlands for the first time in 70 years.
Can you fish for golden dorado in Iberá?
Yes, but under strict rules: fly-only, mandatory catch-and-release, and only in authorised sectors such as the Naciente del Río Corriente and Concepción del Yaguareté Corá — not in the protected core — with a local guide and a Corrientes fishing licence, and outside the summer veda.
Is there an entrance fee to Iberá?
Unlike the Andean parks, Iberá is generally free to enter through its portales, though guides, boat trips and lodges are paid locally, and a fishing licence is required to fish. Confirm current arrangements with the park.
What wildlife can you see in Iberá?
Capybaras, caimans, marsh deer, howler monkeys, giant anteaters, giant otters, and over 350 bird species — plus, increasingly, the reintroduced jaguar. It’s one of the best and most accessible wildlife-watching destinations in South America.
When is the best time to visit Iberá?
Wildlife is good year-round, with the cooler dry months most comfortable. For dorado fishing, the cooler, lower-water months (roughly autumn to spring) are best, outside the summer spawning veda.
How do you get to Iberá?
Most visitors drive to Colonia Carlos Pellegrini from Mercedes (about three hours), which is reached from the airports at Corrientes or Posadas, connecting through Buenos Aires.
Plan your Iberá trip
Whether you come for the jaguars and the birds or for a shot at a golden dorado on the fly, Iberá is one of the most extraordinary wild places in Argentina. Tell us your dates and goals, and we’ll connect you with the lodges and guides who know these wetlands best.