Australian red-claw crawfish. Photo by Department of Fisheries & Allied Aquacultures, Auburn University.
There is a new threat to Lake Tanganyika. Invasive crayfish have been making their way toward the lake. When crayfish get into bodies of water for the first time, their impact on the local ecology is devastating. They are voracious eaters that will consume algae, plants, invertebrates and fish.
Past experiences with the introduction of crayfish into African waters have all ended badly. Even the Okavango Delta, one of the Seven Natural Wonders of Africa, is at risk from the invading crayfish. To read more about the invasive crayfish and their past and potential impacts check out the article on The Huffington Post.