It’s the world’s largest rainforest, containing the world’s largest river, home to giant snakes, pink river dolphins, and ...

The construction of the Balbina hydroelectric dam in the Brazilian Amazon led to the loss of seven endemic fish species in the Uatumã River, researchers have found. The hydroelectric dam has ...

The original species of Astronotus ocellatus is native to the Amazon River basin ... Oscars, like most fish, are timid when they're first introduced to a new aquarium. After they've had a few ...