They managed to make robust fry of rainbow trout adapt to sea water by putting the breeding of rainbow trout fry on a scientific and technological basis.

By controlling water well, they provided conditions favorable to the growth of the fry. After conducting open caisson project they made efficient use of the methods of oxygen supplement and ultraviolet water disinfection to raise the fry in a sci-technological way.

In addition, they scientifically analyzed seasonal conditions, nutritive conditions of the rainbow trout, etc. and responsibly made it adapt to sea water, so as to maximize the survival rate of the fry.

Lots of rainbow trout are now kept in the cage-net fish farm whose water is of good quality.