The Central Fish Culture Institute of the Academy of Fisheries under the Ministry of Fisheries has conducted scientific research activities to complete the fish farming technology for relevant fishes.

Researchers set a goal for completing the farming technology of mandarin fish with good taste and high nutrition. Remarkable progress has been made in the research work for stocking the Lake Yonphung with the fish by deciding the main component of assorted feed and producing mandarin fish fries and prey fishes.

“It is important to increase the production of fries of mandarin fish so as to discharge them in natural waters and form a food chain in order to activate mandarin fish farming,” said Kim Kang Nam, department chief of the Central Fish Culture Institute.

The institute is increasing mandarin fish fries by tending mother fish in a scientific and technological way to improve maturation, spawning and survival rate.

It forms the food chain by releasing feed fishes including grass fish and gold fish in keeping with the characteristics of mandarin fish that is fond of spindle-shaped fishes on the basis of the examination of the distribution of plankton in relevant water areas.

At the same time, it satisfactorily meets the feed needs by developing and completing the domestication technology based on assorted feed.

It is said that assorted feed is made in the way of increasing protein contents by combining locally-abundant fish-meal, bean cake, vitamins, mineral matters and additives.

In order to change the mandarin fish’s habit of eating live fish to that of eating assorted feed, researchers employed the method of making mandarin fishes forget their former food habit for a certain period and eat the as assorted feed competitively.

In particular, they found out that mandarin fish can be habituated to assorted feed well at its early age since its original habit of eating live fish becomes stronger as the fish grows.

When the assorted feed is made in the shape of willow leaves in consideration of the features of mandarin fish, which discerns well fish-shaped objects, it may believe the feed as live fish.

Other researchers are intensifying a study to complete the sweet fish farming technology in ponds and cage-net fish breeding grounds.

They work to select the sweet fish resource multiplication areas, explore the multiplication possibility there in a scientific way and solve other problems to remarkably increase fish resources in natural water areas.

They rounded off the selection of right water areas and secured cage-net frames, cage net and experimental fry in order to increase per-unit productivity of cage-net fish farming using natural feed.

The institute gives a technical course for researchers who are dispatched to each province to activate the fish farming in paddies.