Is it true that fish can only live in water?

No, when the water bodies dry up, some fish (lepidosiren and protopterus, Australian horntooth) are able to hibernate for several months and remain alive at the same time.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.