YOU SAID:

I said hello to my fish and he waved back with his fins

INTO JAPANESE

私は私の魚に挨拶しました、そして彼は彼のひれで手を振った

BACK INTO ENGLISH

I greeted my fish, and he waved with his fins

INTO JAPANESE

私は私の魚に挨拶しました、そして彼は彼のひれで手を振った

BACK INTO ENGLISH

I greeted my fish, and he waved with his fins