Moby.
Not the musician but the "goldfish" my youngest son brought back from the funfair 12 years ago. He started out as an inch long golden coloured fishy in a plastic bag and ended up a foot long mammoth in a 120 litre tank.
He gasped his last gasp this morning.
In brighter news I now have a fishtank with a pirate ship in it for sale. I'll take £50.