Nibbley Finley

Once a month, whether he needs to or not, Duncan takes a bath. Not as you may suspect, in the name of cleanliness, but in order to exercise his pet gold fish, Finley. The responsible mouse takes his place at the tap end to prevent any plug hole escapes. 
His friendly fish always has a marvelous time. He has a tendency to become a little too nibbley in his excitement, so much so that he sunk the rubber duck and Duncan has to keep his paws out of the water because his feet are extremely ticklish and he values his toes.