Untold thousands of marine animals float dead in Amazon river & FloridaFebruary 4, 2011 – MATO GROSSO DO SUL/AMAZON Region – At Aquidauana, pantanal region of the Mato Grosso do Sul state, shoals of painteds, pacus, golden fishes, cacharas – and even stingrays, are floating dead in Rio Negro, one of the largest in the Amazon River basin. The estimated Environmental Policy is of that several tons of fishes died, adding that the authorities and experts, they still do not have the scale of the ecological disaster. Biologist of the State Institute of the Environment, Robert Gill Machado, noted the phenomenon, considered of great proportion, after flying over the region of sub-basin of Rio Negro. At this place fishing is banned. The area is considered one of the nurseries of fish breeding of the Pantanal."