What is the cataterfish (sp?)?

Question

This name popped into my head just now and I can't seem to find where it comes from. What is a cataterfish or catater fish? i don't know if the spelling is right but it's pronounced (cat-at-Er-fish)

Answer 1

You chose your path wisely, Lemmiwinks. I am the Catata Fish

If you answer this riddle, the esophagus will let you pass.

South Park Character from the "The Death Camp of Tolerance episode".