based on scale analysis. We collected 397 specimens from Long-xian, Shanxi, between 2009 and 2012. The scale annuli were characterized as the 3 year-old individuals accounting for 85.64% of the total samples. There was no significant difference in body length () between females and males and the Von Bertalanffy growth model was =729.38[1) was 0.08. The body weight growth inflexion point was at 13.10 years old, with a corresponding body length of 483.66 mm and body weight of 1 857.86 g. The results show that is a species of slow growing fish and it characterizes isometric growth and individual miniaturization in the natural reserve. We should take artificial propagation and artificial releasing to enlarge and revive its populations. The study is intended to realize its growth rhythm and take reasonable actions to protect and vitalize