Lampetra japonica could migrate to the Yellow Sea region and freshwater in Jiangsu Province.

日本七鳃鳗可以迁移到黄海及江苏省淡水中。

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The results indicate that there are seven pairs of gill pouches in Lampetra japonica (Martens). The wall of gill pouch folding inward forms gill-lobes and secondary gill lobe.

其结果表明：日本七鳃鳗的腮囊有七对，囊壁向内折叠形成腮叶及次级腮叶。

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