Halwart, M. and M.V. Gupta (eds.) 2004. Culture of fish in rice fields. FAO and The WorldFish Center, 83 p.   Rice today is grown in 113 countries in the world in a wide range of ecological conditions and water regimes. The cultivation of most rice crops in irrigated, rainfed and deepwater systems offers a suitable environment for fish and other aquatic organisms. Over 90% of the world’s rice, equivalent to approximately 134 million hectares, is grown under these flooded conditions providing not only home to a wide range of aquatic organisms, but also offering opportunities for their enhancement and culture. The purpose of this review is to synthesize available information and highlight the important role that aquaculture in rice-based farming systems can play for food security and poverty alleviation. Aquatic production, in addition to the rice crop itself, is a critically important resource for rural livelihoods in developing countries; its local consumption and marketing are particularly important for food security as it is the most readily available, most reliable and cheapest source of animal protein and fatty acids both for farming households as well as for the landless. This review describes the history of the practice and the different rice ecosystems in which fish farming takes place. The various production systems, including modifications of the rice fields necessary for integrating fish farming, and the agronomic and aquaculture management are examined. Pest management in rice has evolved tremendously over the past decades, and the culture of fish and other aquatic organisms can reinforce environmentally and economically sound farming practices.