A zoo has started a breeding programme for a Mexican fish species that is believed ... has been told by conservationists that its own boxer pupfish is the last one of its species in the world.

The boxer pupfish are believed to be extinct in the wild Eggs from a rare Mexican fish species believed to be extinct in the wild have successfully hatched at Bristol Zoological Society.

Eggs from a rare Mexican fish species believed to be extinct ... Experts at the charity took delivery of more than 50 boxer ...