Do fish really know that they actually live in water?

Or they're just used to it?

Without realising water is actually important to them,

but once they leave water, they'll notice the importance of it.

Why?

Only when they lose something, then they'll notice the importance?

When everything becomes a habit

you'll slowly get used to it

and

you won't notice its importance

until you've lose it.

How super that fish is,

it cannot live without water.

Swim on, fish =]