1、Which is the example of the freshwater fish in salt water, or the saltwater fish in fresh water.
很典型的例子，淡水魚放在在鹽水中，或者咸水魚放在淡水中。

2、flesh of lean-fleshed saltwater fish of the family Serranidae.
酯科咸水瘦肉魚的肉。

3、This is what drives the death of saltwater fish in fresh water, right?
這是導致咸水魚，在淡水中死亡的原因，對嗎？

4、Why saltwater fish are unhappy in fresh water.
為什么咸水魚在淡水中過的不舒服。