One-fifth of Mekong River fish species is now facing extinction, says report

ONE-FIFTH of fish species in the Mekong river face the threat of extinction, according to a new report from a coalition of regional and international environmental groups.

The Mekong -- among the world's most biodiverse rivers, surpassed only by the Amazon and the Congo -- is home to some 1,148 recognised species of fish, with millions of people relying on its waters for their incomes.