YOU SAID:

the fish that loved to fish for fish was very selfish as he was a catfish

INTO JAPANESE

魚釣りが大好きだったその魚はナマズだったのでとても利己的でした

BACK INTO ENGLISH

The fish I loved to fish was a catfish, so I was very selfish.

INTO JAPANESE

私が釣りたい魚はナマズだったので、とてもわがままでした。

BACK INTO ENGLISH

The fish I wanted to catch was catfish, so I was very selfish.

INTO JAPANESE

釣りたかった魚はナマズだったので、とてもわがままを言いました。

BACK INTO ENGLISH

The fish I wanted to catch was catfish, so I was very selfish.