Mexican fish reintroduced to its river after becoming extinct in the wild

The Teuchitlan River in Mexico where the Tequila fish has been reintroduced (Chester Zoo/PA)

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 local people, however, have achieved the return of a species extinct in nature — but conserved in captivity — to its native habitat.

Its success is now intertwined with the community’s identity and is being touted internationally.