throughout the coastal areas of North China. In recent years, the species has exhibited growth rate depression, decreased fertility, and decreased disease resistance because of a number of factors, including changes in the environment and decreased quality of parent fish. Thus, the development of fast-growing offspring by crosswould aid the sustainable development of the with the traits of disease resistance and fast growing and Korea stock (KS) to establish 24 families, including a “Ping You NO.1” family. We measured thetotal length and body weight of these families at 450 days after hatching. We estimated theheritability of total length and body weight using a . The breeding value of all animals at 450-day was predicted using best linear unbiasedThe heritability of total length and body weight were 0.266 and 0.302, respectively,traits have moderate heritability. The correlation coefficients between breeding values andphenotypic values of the growth traits<0.01). Both growth and breeding ability were higherin Ping You No.1 than in the other families. We used a selection standard of ~30%, and found that 71.43% families of all were the same, selected based on breeding value and phenotypic value, respectively. Comparison of selection efficiency based on breeding value or phenotypic value revealed that the breeding value was better than the phenotypic valuefor growth traits: 35.38% to total length and 32.29% to body weight.