Size:
- Lake Victoria: Lake Victoria is the largest lake in Africa by surface area, covering approximately 68,800 square kilometers (26,564 square miles).
- Lake Tanganyika: Lake Tanganyika is the second largest lake in Africa by surface area, covering approximately 32,900 square kilometers (12,704 square miles).
Depth:
- Lake Victoria: Lake Victoria is relatively shallow, with an average depth of around 40 meters (131 feet) and a maximum depth of 82 meters (269 feet).
- Lake Tanganyika: Lake Tanganyika is much deeper, with an average depth of around 570 meters (1,870 feet) and a maximum depth of 1,470 meters (4,822 feet), making it the deepest lake in Africa and the second deepest lake in the world after Lake Baikal in Russia.
Shape:
- Lake Victoria: Lake Victoria has a relatively irregular shape, with several large bays and peninsulas. It is roughly circular in outline, but with a number of large embayments, such as the Kavirondo Gulf and the Speke Gulf.
- Lake Tanganyika: Lake Tanganyika is long and narrow, stretching for approximately 673 kilometers (418 miles) in length and with an average width of around 50 kilometers (31 miles). It has a long and narrow shape, with steep-sided cliffs along its shores.
Biodiversity:
- Lake Victoria: Lake Victoria is home to a diverse array of plant and animal species, including the Nile perch, which was introduced in the 1950s and has since become a dominant species in the lake, impacting the native fish populations.
- Lake Tanganyika: Lake Tanganyika is renowned for its rich biodiversity and is considered one of the most biodiverse freshwater ecosystems in the world. It supports a wide variety of unique species, including the Tanganyika sardine, the cichlid fish family, and the freshwater octopus. Lake Tanganyika is home to more than 1,000 species of cichlids, which is more than any other lake in the world.