Drinking and Eating:
Fish use water to get food and to drink.
Fish also use water to get air and for a place to live.
Fish keep clean by getting rid of their bodies waste in water.
They also automatically keep clean because they live in water.
I am assuming that fish use water to also play around in with there "fish friends".
Fish use water as a home.
Fish began their lives and their children's lives in water.
Parrot fish also die in water.