A keystone species of the Amazon River ecosystem, the arapaima is a powerful predator known by many names. Mike Bock Reaching up to 10 feet (3 meters) long and weighing 440 pounds (200 kilograms), ...

The Amazon river dolphin, or boto, is an integral feature of the rainforest’s biodiversity and culture, and is central to several Indigenous tales. Even though the dolphin isn’t fished for human ...

The Madeira Basin has the most diverse fish life in the Amazon River Basin with 1,406 species catalogued, but human interference and the climate crisis are provoking a significant decline in fish ...

Strange, pink, small-eyed freshwater dolphins glide through today’s turbid waters of the Amazon river basin. But they are fast approaching extinction. The Amazon river dolphin (Inia geoffrensis), or ...