Congo River Congo River The great Congo River (also spelled Kongo River and known as the Zaire River; ; ; ) is the second longest river in Africa, shorter only than the Nile, as well as the second largest river in the world by discharge volume, following only the Amazon. It is also the world's deepest recorded river, with measured depths in excess of . The Congo-Lualaba-Chambeshi River system has an overall length of , which makes it the world's ninth-longest river. The Chambeshi is a tributary of the Lualaba River, and "Lualaba" is the name of the Congo River upstream of
Nile tilapia to this species, too. An undescribed population found at, for example, Wami River, Lake Manyara, and Tingaylanda seems to be a close relative. Nile tilapia The Nile tilapia ("Oreochromis niloticus") is a species of tilapia, a cichlid fish native to Africa from Egypt south to east and central Africa, and as far west as Gambia. It is also native to Israel, and numerous introduced populations exist outside its natural range (e.g., Brazil). It is also commercially known as mango fish, "nilotica", or "boulti". The first name leads to easy confusion with another tilapia traded commercially, the mango tilapia ("Sarotherodon galilaeus").