What sentence is suitable for shooting fish in a fish tank?

1, the happiness of fish is that they can swim freely every day.

The fish in the pond gently spit out a series of small bubbles.

3. The little fish in the pond are swimming around, very happy.

Clear water keeps pouring into the river, and fish swim freely.

Fish swim freely under water.

6. As soon as the fish food was thrown into the water, the fish from all directions swam in a hurry.