ICLARM's five-year plan (1988-1992) includes construction of a modest aquaculture genetics research facility so that the Center can begin to take a leadership role in the conservation of important fish genetic resources, especially those from freshwater such as the tilapias. Aquaculture, particularly the intensive 'feedlot' systems typical of the 'North', can have serious adverse environmental impacts such as water pollution. However, integrated farming in which agricultural residues and even human excreta can be recycled, turns potential pollutants into productive assets. ICLARM views the development of such systems as of immense benefit in rural areas and is engaged in a. long-term research program that seeks to understand the basis of fish production in integrated farming systems.