Thamnaconus septentrionalis is a common economic marine fish species that can be found in coastal waters of China.The artificial breeding technique has been established for T.septentrionalis.In order to optimize artificial culture techniques and to promote industrialization of T.septentrionalis,path analysis was conducted to investigate the effects of morphological traits on body weight.According to body weight,the samples were divided into 3 groups(small size,medium size,and large size).Full length(FL),bod...