I eat fish every week.

I love fish dishes.

The 𩸭魚 is one of my favorite fish.

I like fishing in the sea.

He is a specialist in that field.

He has expert knowledge.

He is studying computer science at a specialized school.

He is a specialist fool, with no interest in anything outside his field.

He couldn't say anything about issues outside of his field of expertise.

There are many different specialty stores in this town.