The Kupho Cooperative Farm in Hwangju County, North Hwanghae Province releases fry in many hectares of rice fields to increase both fish and rice production.

Cooperative farms in Samsok and Sadong districts, Pyongyang, and in Taedong and Phyongwon counties, South Phyongan Province, cultivate carps and goldfish in rice fields in an extensive way.

Experience some farms gained last year shows that rice field fish breeding is a rational and effective way of raising rice and fish output.

Fish farming offices under the Fish Farming Guidance Bureau supply fry to cooperative farms.