economy

Various fish farming methods ensuring the stability, diversity and  qualitative and quantitative growth of fish production have been introduced to increase the production of fish.

North Phyongan and South Phyongan provinces have made successes in increasing mandarin fish resources.

This year, these provinces have planned to release more than 10 000 mandarin fish fries into Lakes Thaechon and Yonphung and put great efforts into it.

North Phyongan Province has put fish farming on a scientific and technological basis to ensure that the production of young mandarin fish is not hindered.

The province has provided enough conditions for water temperature and oxygen supply as the mandarin fishes in the adult fishing ponds entered the pregnancy. It has paid special attention to the nutritional management of the fish and ensured the production of young mandarin fishes by fully supplying animal feed.

South Phyongan Province increased the production of feed fries needed for growing young mandarin fishes.

A noticeable thing is that it combined artificial and natural methods in the production of feed fries.

The province built a separate feed fish pond at the Kaechon City Stocking Fishery Station and increased the production of fish for feed by raising a fast-growing and mandarin-like tilapia, silver carp and Aristichthys nobilis. And it also raised various kinds of small fishes in rivers and reservoirs to supplement the feed fries.

This year, the Komalsan Offshore Atlantic Salmon Farm discharged hundreds of thousands of young pollack into the sea.

The station conducted technical study through "Technical Questionnaire" dealing with experience and lessons accumulated in the walleye pollack release and exchanged experience with advanced units to help keepers skillfully breed walleye pollack.

It has introduced breeding methods suited to the biological characteristics of walleye pollack and its growth stage to raise the survival rate and fattening rate of young walleye pollack.

In addition, many fish-breeding units have carried out their plans for producing fresh-water fish and releasing fries by activating the production of natural feed including Hermetia illucens and mud-snail and expanding floating feed production.