Paddy cum fish culture
Rice and fish culture involves farmers introducing fish into their rice fields. This technique is good for both fish and ice. Safely hidden from birds, the fish thrive in the dense rice plants, while they in turn provide a source of fertilizer with their droppings, eat insect pests and help to circulate oxygen around the rice field. Farmers report that keeping fish in rice fields can increase rice yields up to 10% additionally they have the supplies of fish.
Source: Agricultural Business Innovation-Indonesia.