by Maira RENOU RIO DE JANEIRO, Brazil (AFP) — Its white flesh is tender and tasty, it can measure up to three meters long and weigh more than 200 kilograms: meet the pirarucu, one of the world’s largest freshwater fish, and native to the Amazon. The enormous animal once threatened with extinction, is now on dinner plates in Rio de Janeiro’s fanciest restaurants, thanks to a number of chefs who have championed the delicacy, and […]