생선은

fish

→ 생선
phrase Rare #17,696
fish 은 marks 생선 (fish) as the topic of the sentence and can add a contrast, like “as for fish.”
KO: 생선은 건강에 좋아요.
EN: Fish is good for your health.

생선은 네 몸에 잘 안 받잖아

Fish doesn’t agree with your body, you know.

— 양철북 (1979)

그 생선은 물이 아주 좋아

That fish really likes the water.

— 음식남녀 (1994)

오늘 아침 생선은 노스스타나 로워스 폴리에서 잡은 거 예요.

This morning’s fish was caught in North Star or Lower’s Polly.