YOU SAID:

i like koi, they are beautiful and don't know

INTO JAPANESE

鯉を好きな、美しいを知らない

BACK INTO ENGLISH

Like the carp, the beautiful do not know

INTO JAPANESE

鯉のような美しいかわからないです。

BACK INTO ENGLISH

It is not beautiful to know.

INTO JAPANESE

それは知っているに美しくありません。

BACK INTO ENGLISH

To know it is not beautiful.

INTO JAPANESE

それを知っているには美しくありません。

BACK INTO ENGLISH

To know it isn't pretty.

INTO JAPANESE

それを知っているですね。

BACK INTO ENGLISH

You know it is.

INTO JAPANESE

あなたもそれを知ってる

BACK INTO ENGLISH

You know it is.