them, those aspirations now extend beyond just success on the pitch. adam wild, bbc news. a species of fish called tequila that was previously declared extinct has been reintroduced back to the wild by the combined efforts of conservationists at chester zoo and experts in mexico. the freshwater fish has now been returned to its native habitat in south west mexico. victoria gill reports. a little known species with an extraordinary story. the tequila fish is a small freshwater fish that lives in the rivers and lakes of south west mexico, but it s been missing, presumed extinct, for more than a decade. and it s just one of thousands of aquatic creatures that are facing extinction, but have slipped under the radar. small little things, a bit silver sometimes, a bit of colour when they breed, but not much interest on the global conservation aspect. now, with the help of conservationists at chester zoo, scientists in mexico have reversed