直接投喂鱼块和配合饲料，驯化率为零：直接投喂整尾死鱼。

They are directly fed dead fish , fish meal , and artificial diet individually.

youdao

直接投喂鱼块和配合饲料，驯化率为零：直接投喂整尾死鱼。

They are directly fed dead fish , fish meal , and artificial diet individually.

youdao