Metaphorical sentence: fish swim freely in the water like angels.
The fish is like a naughty child, swimming around playfully in the water and playing games.
Fish swim freely in the water, like carefree dandelions.
Fish play carefree in the water, like a free butterfly.
Anthropomorphic sentences: Fish swim slowly in the water.
Fish dive in the water for ballet.
The fish swam in the water with a heavy heart.
The fish swam carefully in the water.
The fish swam in the water with great excitement.