Which African Great Lake is also widely known as Lake Nyasa?

The African Great Lake widely known as Lake Nyasa is Lake Malawi.

Lake Malawi occupies part of the East African Rift between Malawi, Mozambique and Tanzania. The names reflect regional usage: “Lake Malawi” is especially associated with Malawi, while “Lake Nyasa” is widely used in Tanzania; Mozambique commonly uses Lago Niassa. The lake is also sometimes called the Lake of Stars, a nickname associated with David Livingstone’s nineteenth-century observations of fishermen’s lights.

It is a very large and deep freshwater lake, measuring roughly 560–580 kilometres long and reaching about 706 metres at its deepest point. Its rift-valley origin and long geological history helped produce remarkable biological diversity, particularly among its hundreds of cichlid fish species.

Lake Malawi is not the same as Lake Tanganyika, Lake Victoria or the smaller African Great Lakes listed as alternatives. It is also meromictic, meaning its deep water layers do not completely mix. David Livingstone reached the lake in 1859, although Portuguese traders had visited it earlier.