Farming fish and rice together in China, benefits productivity of both.

A study shows that cultivating fish and rice together provides several benefits in China.  The fish provide fertilizer for and protection from disease and insects to the rice, while the rice provides shade and attracts insects that the fish eat.  The dual crops of rice and carp (a delicacy in China) could double farmer's incomes as well as greatly increase food production.  Learn more from the article in Nature, entitled "Fish and rice flourish together in paddies."