 The region is home to about 2.5 million insect species, tens of thousands of plants, and some 2,000 birds and mammals.To date, at least 40,000 plant species, 2,200 fishes, 1,294 birds, 427 mammals, 428 amphibians, and 378 reptiles have been scientifically classified in the region.One in five of all bird species are found in the Amazon rainforest, and one in five of the fish species live in Amazonian rivers and streams.