Fingerlings must be carefully raised in the pond with hapa or fish cage to reduce the mortality of the fingerlings. Fingerling can also be care in the clean and low-flow water pond.
Strong hapa fish net, wood or bamboo and rope are needed to raise fingerlings with fish cage or hapa.
1-inch fingerlings can be raised 500 per meter square. About 10 thousands of 2-3 weeks old fingerlings can be raised in hapa which has 6 ft length, 5 ft width and 3 depth.
Hapa must be cleaned once a week.
When fingerlings become 2-3 inches in size or after 2 months, they must be released in grow out pond.