By the way my crackpot theory was that kran are formed by hibernating ulbernauts being encrusted over time by dripping in a magic cave. Of course settings came out with an explanation that relegated mine to the dustbin of krastory.
Did the Yauth eat all the carp? are there no other fish in that lake at all?
You are likely to find the answer to my question in the library; the clue, however, might be too ambiguous -- just like some of the riddles in the game.