The Mekong river is the 11th longest river in the world. It run in six countries – China’s Yunnan province, Burma, Thailand, Laos, Cambodia and Vietnam. With it’s length of 4,350 kilometers, it is the 7th longest river in Asia. It discharges an estimated of 475 km3/114 cu mi of freshwater to the sea annually and it drains an area of 795,000 km2.

Because of it’s massive size, no wonder Mekong is home to the world’s giant freshwater fishes. This giants are now becoming small in number due to human activities.

The name “MEKONG” originate from the Thai language, Mae Nam Khong, which means “Mother-River Khong”.

Mekong river serves as a major transportation and economic route to all villages around it.

The Amazon river is the largest and the second longest river in the world. It is so huge that it covers six countries, Peru, Colombia, Brazil, Bolivia, Venezuela, and Ecuador. It has the largest drainage basin in the world and accounts for approximately one fifth of the world’s total river flow.

During the dry season, the river covers and area of 110,000 square kilometers, while in the wet season the area rises to 350,000 square kilometers. At its widest point the Amazon River can be 11 kilometers wide during the dry season and 45 kilometers wide during the wet season.

Amazon river is also home to one of the world’s largest fishwater fish, the Pirarucu. Sadly, this fish is dwindling in numbers due to over fishing. Here’s a video of a study funded by the National Geographic.