MEXICO CITY, Mexico — There once was a small fish called “tequila splitfin” or “zoogoneticus tequila” that swam in a river in western Mexico, but disappeared in the 1990s. Scientists and residents, ...

MEXICO CITYMEXICO CITY — There once was a small fish called “tequila splitfin” or “zoogoneticus tequila” that swam in a river in western Mexico, but disappeared in the 1990s. Scientists and residents, ...

Add Yahoo as a preferred source to see more of our stories on Google. In this undated photo provided by The Chester Zoo shows two "tequila splitfin" fish in an aquarium at the Chester Zoo in Chester, ...