In sub-Saharan Africa, the integration of pond aquaculture into rainfall-based agriculture systems, using practices such as Integrated Agriculture Aquaculture (IAA), has been largely successful. In some cases, fishponds have doubled household income, and increased household food production by 150%. Farms using IAA are proving to be 8% more productive during droughts, with women becoming more actively involved. Adoption of the approach has been growing at 25% per annum in Malawi since 2000, and is fast expanding. This is especially noted in the Chinyanja Triangle in the lower Zambezi River Basin, an area that covers southern and central Malawi, central Mozambique and eastern Zambia.