I eat fish every week.

I love fish dishes.

There are many fish in this river.

The small fish are swimming in the river.

The small fish are swimming in the river.

There is a rumor that a fish with a human-like face lives in that pond.

You can find a 'tatsu no otoshigo' in this sea.

This fossil is believed to be that of an ichthyosaur.

He took a photo using a fisheye lens.

He caught a big fish.