The Taedonggang Fish Farming and Spawning Station introduced advanced technology into breeding a new good breed of Ryongjong fish, thus boosting the productivity by over 300 percent.

The Youth Tudan Breeding Fish Station built a new spawning tank and ensured the appropriate conditions for the growth of spawners to breed more fry.

Different stations resolved the technological problems arising in the production of advanced feed and opened up prospects for increasing the growth rate of fishes and productivity.

Other fish farms distinguish themselves in resolving feed shortage by producing protein feed with Hermetia illucens.