15 movable framed net fish-breeding grounds and greenhouse-style catfish grounds have taken their shapes in its cities and counties up to now.

Kanggye City set up a movable framed net fish-breeding ground of 1,500 square meters in the River Jangja and built a greenhouse-style catfish farm.

Huichon City and Chosan, Tongsin, Rangnim and Usi counties set up various movable framed net fish-breeding grounds in rivers and lakes and put fish farming on a sci-tech basis.

Spawning stations of cities and counties supplied tens of millions of fries to those grounds.