apillus and sagitta emerge in late embryo stage. disk when the larvae began to hatch and then developed into a similar ellipse shape with the upgrowth of larvae. Nineteen days after hatching, lapillus showed a shape of rhombus with two pointed ends and a convex middle part. Sagitta was first showing a disk shape and then an elliptic one and after 19 days growth, which looked like a peach. Asteriscus did not appear until 19 days after the hatching of larvae and it was like an elliptic shape with a concave middle part. <0.001, <0.001, =356). The first ring on the otolith of larvae formed on the second day after hatching and its number increased by one every day. The figure of rings on lapillus ()] had a linear relationship with the age of larvae (d). The equations are: =1.003 4 d+0.054 5 (=165).sagittae changed largely in the late period of ontogeny. On the other hand, the lapillus of had a more stable shape and its rings had a good readability rings. So it is concluded that lapillus is more suitable for the identification of age of