Global Warming / Cooling / Some bloody thing has killed my Goldfish
Oh, when will those pollution mongering b*****ds ever learn?
Today, TwinkleToes the goldfish (named for his distinct lack of same) has died.
Thank you for not signing the Kyoto Treaty, now his fishy blood is on your hands.
I refuse to belive he committed suicide by oxygen, this just smells like a conspiracy.
Well , he smells like something, anyway.

Update: And, final clue, didn't taste like chicken.