Fish farming has traditionally been combined with other agricultural production in West Java. Activities associated with fish culture include raising ducks, chickens, horses, water buffaloes, rice, aquatic plants, and even food processing, such as rice milling and the manufacture of soybean cake. An investigation was made by the Indonesian Inland Fisheries Research Institute in 1979 with FAO assistance, of the more significant systems, including fish culture in combination with rice, aquatic vegetables and mendong (a fibrous plant which is used to make mats and baskets), as well as with ducks and chickens.