This is one of the more delightful items from my feed reader so far this year. Yes, of course you can sing the title (which is from this Boing Boing post) to the tune of Camptown Races. But there’s much more.
The goldfish clean the fryer residue (doo dah, doo dah), as shown in this video (oh, doo dah day). I suspect that this tank is the location for a game show on Japanese goldfish TV, where the fish that survives the closest brush with tempura-ness goes on to the next round, in which it is swallowed by a human.