This one was part of the Death Personified shelf-full of novels that I downloaded once upon a time. And I am so glad I did. It had flavors of Pratchett and Douglas Adams that made me laugh out loud. The goldfish had a surprisingly big part to play in the grand scheme of things. And the poor Devil was so put upon by God and Death both.
Like all novels involving the Devil, this one too started when he hatched a plot to take over the world. Pity that things didn’t go as well as he’d thought they would.