We studied the properties of silvering salmon in Oncorhynchus masou masou population under aquaculture condition and found 1 the proportion of fish with silvering body color among six progeny groups varied between 0 and 0.21.The ratio of fish with normal color and silvering color was significantly different between progeny groups (Pearson χ _{df =5}²=93.362, P <0.01); 2 by using L ^* a ^* b ^* color space to check the color difference, there was a significant different in body color between salmon with silvering body color and normal body color. The value of L ^*、 a^* and C^*_abbetween fish silvering colored and normal colored was significant difference (P < 0.01). The L ^* value for the former is 30.78-48.50 and 51.24 to 71.43 for the latter; 3After 12-month experimental period under the same condition, silvering salmon grew significant slower than normal ones (P <0.01), the average body weight of the former was 113.72 g and the latter was 132.25 g. For the indices of condition factor (CF) and special growth rate (SGR), there also had significant difference between the silvering and normal body color salmon (P < 0.01) during the experiment. Salmons with different body color presented different SGR at different growing period, but CF for the normal body color salmon is always higher than the silvering body color ones. This paper provides data for the further utilization on silvering salmon and for body color traits genetic improvement in O.masou .