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催产获得受精卵，从胚胎发育后期到秋季鱼种出塘的孵化饲养过程中，连续取样剖出矢耳石，其制片在光镜下观察耳石形态、大小、轮纹排列及其间距变化，部分耳石在扫描电镜下观察轮纹的细微结构。用实测体长体重和日轮退算体长及计算体重比较研究了生长特性。耳石形态经历了由圆形、椭圆形、菱形到梨形的变化过程。耳石直径与全长呈线性相关，其关系式为ｙ＝－０．１９４４＋０．０３８８ｘ。孵出后第二天出现第一个日轮，之后每日形成一轮，日轮间距变化与鱼体生长及生态条件变化有关。以实测和退算数据用高次方程描绘的生长曲线基本一致，经ｔ检验，无显著差异。
Oviparous fertilized eggs were obtained. During the process of hatching from the late embryo to autumn, the otolith was continuously sampled to observe the changes of the morphology, size, arrangement of the otolith and its spacing in the light microscope , Part of the otolith observed under the scanning electron microscopy wheel fine structure. The growth characteristics were studied by comparing measured body length with daily rotation and calculation of body weight. The otolith morphology underwent a round, oval, diamond to pear-shaped changes. The otolith diameter is linearly correlated with the total length, and its relation is y = -0.1944 + 0.0388x. The first day after the hatch appeared the first day after the formation of a daily round after day changes in the distance between the wheel and the growth of fish and ecological conditions related. The measured growth curve with the high-order equation was basically the same with the measured data and the returned data. There was no significant difference after t-test.