YOU SAID:

Fish wants to be crab

INTO JAPANESE

魚はカニになりたい

BACK INTO ENGLISH

Fish want to be crabs.

INTO JAPANESE

魚はカニになりたい。

BACK INTO ENGLISH

I want the fish to be crabs.

INTO JAPANESE

魚はカニにしてほしい。

BACK INTO ENGLISH

I want the fish to be crabs.