Professor's Cat

So after class, Professor talks about his wife. We, the TAs, are walking with him towards his office when a friend of mine decides to ask him, "Doesn't your son also teach at Stony Brook?" The professor replies in the negative,with added humor,"I don't have a son. I have a cat. Two cats." He tells us that they were originally named, "Chaos" and "Catastrophe." But he soon realized to his dismay that even though "Chaos" is fine and manageable without having it abbreviated, "Catastrophe" on the other hand was catastrophically difficult to pronounce in one go, and it invariably reduced to "Cat" instead. So having said that, my professor concludes "but you can't call a cat, Cat. So we renamed her, "Fishum" ' So now I guess, Cat has become Fish :) Oh well, what's in a name after all.