Spooky Fish 

The fish that will kill all people that get in its way.

Oh man did you hear about that serial killer yah hes a real spooky fish!

Spooky Fish by Ryan Mallette July 5, 2007

Spookyfish 

The pet fish Stan is given by his extraterrestrial aunt in the South Park episode, "Spookyfish". This fish becomes a bloody killing monstrosity

Stan couldn't go to sleep for fear of the spookyfish

Spookyfish by JoePMa March 21, 2009