Lake Tanganyika, the second oldest and the second-deepest lake in the world, could be in for some rough waters.

Putting function before form, members of the Perissodinus genus of fish have developed a hugely lopsided jaw that provides a distinct feeding advantage.

Text of report by Burundi news agency ABP Makamba

Excerpt from report by Burundi news agency ABP Bujumbura, 20 August: Lake Tanganyika is under threat from the very fast spreading water hyacinth [Eichornia crassipes], an invasive plant said to have originated in Uganda and Rwanda.

Excerpt from report by Burundi news agency ABP Rumonge, 26 June: The waters of Lake Tanganyika are becoming muddier and muddier on the Rumonge (southwestern Burundi) side of the lake which is having a negative impact on the area's fishing activities.