About Us

WWF aims to stop the degradation of the planet’s natural environment and to build a future in which humans live in harmony with nature.

WWF Greater Mekong has implemented a comprehensive, large-scale conservation programme in the Greater Mekong region to protect priority species such as the Mekong Giant Catfish and the Dog-Eating Catfish.

The Mekong is the largest river in Asia and ranked amongst the top three rivers globally in terms of fish diversity. Large stretches of the middle and lower Mekong (comprising Thailand, Laos, Cambodia, and Vietnam) remain relatively pristine but could be irreversibly altered by planned infrastructure developments.

The Mekong supports a unique assemblage of freshwater megafauna (species >90-kg and >180-cm long) including four of the six largest freshwater species on earth. Three of these: giant carp Catlocarpio siamensis, Mekong giant catfish Pangasianodon gigas and dog-eating catfish Pangasius sanitwongsei are IUCN-listed as Critically Endangered.

The proliferation of cheap nylon monofilament gill nets across the Mekong since the late 20th century coincided with catastrophic declines in populations of these species. In addition to the ASAP listed-fish, Mekong Megafauna includes other flagships of the river such as Irrawaddy dolphin Orcaella brevirostris, whose freshwater population in the Mekong is listed as Critically Endangered and comprises less than 80 individuals, and another ASAP species, Siamese crocodile, Crocodylus siamensis, now likely extinct in the Mekong but present in a number of tributaries such as the Srepok river.

What We Do

Safeguarding critical sites for threatened Mekong Megafauna

This project will use cutting-edge environmental DNA (eDNA) analysis to identify important spawning, migration, and nursery sites for these species in the Lower Mekong in order to:

1) develop community Fish Conservation Zones for their protection and

2) inform the scientific debate on sustainable mainstream hydro power developments

Contact Details

Web & Social Media

Photo Credits

Featured image: Roland Wirth