Fishie by xXxItsDarkOutsidexXx
Disclaimer: Riku is not my character… he's still pretty awesome though.
Summary: Nine-year-old Riku teaches you how to take care of a little fish. How cute.
There was only so much you could do for an ailing fish. The most obvious—and his sister's favorite—FEED THE FISH. But all a little fishie's problems could not be solved by simply overdosing the fish on whatever things fish food contained.
Riku, as a child, used to rub its belly. Yes, it's true, he used to stick his hand into the bowl and rub his thumb along the fish's stomach.
Now, he was a firm believer of 'if your fish is floating at the top of the water (or at the bottom, or just… upside-down) then trapping the glass will fix it.' Tapping the glass was one of the more violent methods but it was equally effective. It was like shock therapy for the fish, and if you tapped long enough the shock therapy would jump-start the poor little fishie's heart.
He had a little fishie, so it was fine, but if you had a big fish… well there was nothing he could do to help you then.