到了第五天，胚胎形成一个液囊，然后胚盘和胎儿开始分化。

By the fifth day, a fluid cavity forms in the embryo, and the placenta and fetal tissues begin to separate.

与牙鲆卵不同的是，大菱鲆卵在胚盘皮层区有皮层小泡；

Unlike eggs of flounder, there are cortical alveoli in the cortex of eggs of turbot .

在鳙鱼胚胎发育的几个早期阶段，作者观察到在胚盘、分裂球和囊胚层细胞与卵黄这种重要物质之间有某种有机联系。

The authors have observed that the blastoderm, the blastomeres and the blastula cells have intimate relation with the yolk which plays a very important part in the development of the embryo.