Hemibarbus maculates Bleeker ,a small freshwater fish in family Cyprinidae ,as an endemic species in China ,is of great commercial value .In this paper ,we studied morphological information of 132 H .maculates samples collected at Yuanzhou section (113°54′-114°37′E ,27°33′-28°05′N )of Yuanhe River in Yichun , Jiangxi Province from March in to 2009 June in 2012 .Based on the analysis of the morphological index system by Principal Components and R-cluster Analysis ,H .maculates was classified by body size and condition factor .On the basis of this analysis ,19 characteristics were normalized and further used for stepwise discriminant ,and then 5 characteristics were screened including condition factor , interorbital ,body depth ,distance between pelvic fin and anal fin ,and caudal peduncle length .Thus the discriminant equations were built for classification of 132 samples with accuracy rate of 97% .One‐way ANOVA revealed that there were significant differences in seven standardized characteristics and body length between male and female populations (P<0 .05) .Therefore ,it was concluded that the female H . maculates collected from Yuanhe River were superior to males in the condifion factor and body size ,but had smaller interorbital diameter ,caudal peduncle length and pectoral fin length .The findings can be used in sexual identification of H .maculatus and provides the basis information for its reproduction .%分析了江西袁河袁州江段的132尾花（2009年3月至2012年的6月间采捕）的形态学性状，建立了雌雄个体的判别模型。主成分分析和R‐聚类分析均显示其雌雄个体差异主要集中在体形大小和体型肥瘦方面。通过逐步判别法从132尾样本的19项性状中筛选出5个性状：肥满度、眼径、体高、尾柄长、腹鳍臀鳍间距，在此基础上建立的判别方程对两性群体识别的正确率为97％。方差分析显示，眼径、尾柄长、背鳍刺高、胸鳍长、体高、腹鳍臀鳍间距、肥满度7个标准化性状和体长在两性群体间均存在着显著的差异（P＜0．05），分析试验结果可知，花的雌性个体比雄性个体体型大，更为丰满，但眼径和尾柄小、胸鳍短。该研究结果可解决花性别鉴定问题，为其繁殖利用提供基础资料。
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