An aquatic mouse and an ugly blob-headed fish are among new species discovered in the Amazon

In the heart of the Amazon’s aquatic realm, scientists have unveiled two remarkable discoveries: a tiny, enigmatic mouse that swims like a water vole and an extraordinary fish with an unmissable bulbous head. The mouse, named the “Amazonian aquatic mouse,” adapts to flooded habitats with webbed feet and lustrous water-repellent fur. Meanwhile, the “ugly blob-headed fish,” true to its name, sports an unusually swollen head that houses its enlarged olfactory organs. These striking creatures expand our understanding of the Amazon’s unparalleled biodiversity.