The rearing of fish in pools or tanks; Kapetsky (1994) CIFA Technical Paper No. 27 gives a strategic assessment of warm water fish farming potential in Africa. In China, manuring has traditionally taken place by raising ducks and allowing their droppings to fall into the water. In a somewhat left-field approach to the topic, Tejeda and Townsend (2006) Gender, Tech. & Dev. 10, 1 discuss the different meanings of fish farming for different family members as a key issue in understanding relative successes and failures in fish farming; look, too, for Ho’s atmospheric account of the Chinese dyke-pond system (2006, Institute of Science in Society).