The Chinyanja triangle is a sub-region of the Zambezi River Basin including parts of Malawi, Mozambique and Zambia. Researchers from the WorldFish Center, the International Water Management Institute (IMWI), and the Institute of Environmental Systems Research (USF) are investigating the implications of the introduction of fish ponds in rural communities on the water balance of sub catchments in the region. In addition, the impact on local and regional markets as well as a possible emergence of social conflicts among rural communities, are central issues in the project. Since Sub-Saharan Africa is vulnerable to droughts, the research will examine the consequences of climate change on water availability, and a decision-support system for regional water managers and national resources management organisations will be developed.