The Youth Tudan Breeding Fish Station has succeeded in getting highly viable breeding fish that grows fast with less feed. It has also set up a new water filtering device to raise the rate of hatching.

The Samchon Catfish Farm has introduced scientific assorted feed system after decreasing the number of labor per areas of fishing ponds and the amount of water per fish cultured in a stepped-up effort to recycle water.

The Sohung Poman Fish Farm has ensured enough supply of protein feed from its own animal protein feed production ground and the Sunchon Catfish Factory has arranged fishing ponds according to the kinds and growing phases of fish to ensure scientific accuracy in feeding and keeping water temperature.

The Rinsan Catfish Farm and many other units have actively introduced fish farming methods suited to their specific conditions.