And while the Mekong heaves with more than 700 varieties of fish, including a catfish as big as a grizzly bear, the water was too opaque, at the end of the rainy season, for us to see any of them.

• 湄公河也拥有700多种鱼类，包括像灰熊一样大的大鲶鱼，但在雨季的后期河水浑浊，我们没有看见一条鱼。