Lake Kariba, the world's largest artificial lake and reservoir by volume, is facing challenges of overfishing and climate change, impacting fish stocks. To address these issues, Zimbabwe's Director of Fisheries and Aquaculture Resources Production, Milton Makumbe, has suggested harmonizing policies between Zambia and Zimbabwe on managing the lake's fishery and increasing aquaculture operations. Makumbe made these recommendations during a workshop in Siavonga, Zambia, with support from the UN’s Food and Agriculture Organization. The countries have a protocol for economic and technical cooperation but have not yet implemented it effectively.