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The organization also moved an Amazon dolphin with a pinkish belly the Tucuxi to its endangered list, meaning that all of the world's freshwater dolphins are now threatened
A shark only just formally discovered might already be extinct - a fate no shark has yet suffered in the human era - while an Amazon river dolphin has become endangered, a Red List of species in trouble showed on Thursday.
More than a quarter of the 128,918 animal, plant and fungi species assessed by the International Union for Conservation of Nature (IUCN) in its update are now threatened with extinction. The latest list has 31 new extinctions including several frogs and more than a dozen freshwater fish.