N a very large dark grey aquatic salamander, Cryptobranchus alleganiensis, with internal gills: inhabits rivers in E and central US: family Cryptobranchidae (美国)鲵鱼
Cryopreservation may be the last chance for the hellbender, aka the snot otter.
超低温保存或许是鲵鱼，又称隐鳃鲵的最后机会。
There are only two species related to the hellbender: the Chinese giant salamander (picture) and the Japanese giant salamander, which are also in decline.
隐鳃鲵仅有两个近亲种属：中国大鲵(上图)和日本大鲵，而这两种也都在锐减。
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