Sadly, cannibalism doesn't go over well in children's books (although I'm sure that Chad would be apprecative...). ;)

There's already a "ugly duckling" fish book out there, forget the name of it, one of my friends have it, but they don't like it because in the book (as I recall) the fish eventually turns into a "normal duck" and is now accepted. There's at least one sequel to it.

Happy Birthday!