Nile tilapia

A fisherman on the River Nile. Khaled Desouki/AFP via Getty Images Dalia Saad, University of the Witwatersrand The Nile is one of the world’s most famous rivers. It’s also Africa’s most important freshwater system. About 300 million people live in the 11 countries it flows through. Many rely on its waters for agriculture and fishing to make a living. The Nile’s two main tributaries, the Blue Nile and the White […]