八目鳗类鱼有中肾，并且通常是其前肾的新生物。
Hagfish have a mesonephric kidney and are often neotenic of their pronephric kidney.
与八目鳗类鱼区别开的七鳃鳗。
Any of several similar fishes, such as the lamprey and electric eel.
不幸的是，有时候，八目鳗类鱼会成为自己防卫机制的受害者。但通常情况下，它会把自己拧成几节，然后从粘液中逃脱。
The hagfish, unfortunately, sometimes falls prey to its own defense mechanism, but normally it twists itself into knots to escape the gelatinous goop.
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