Kippers

Sort of. I don't have to feed them overpriced fish food. Or freshen their water.

If you focus in on their "gills" they look like they're grinning at their pal Sponge Bob Square Pants (him under the sea).

But if you can find your way past the poorly lit gills, and focus on their mouths, you'll detect the tiniest hint of sadness.

I can't imagine why a kipper would feel sad, out there in the big blue sea. Unless, of course, their little fish brains are programmed to realize they're predestined to be smoked. And chewed to bits. With hot buttered toast.