Who keeps fish ?

This quiz was supposedly written by Einstein. He said that 98% of the people in the world cannot solve the quiz. Could you be among the other 2%?

There are 5 houses, each is a different colour.

In each house lives a person of a different nationality.

These 5 owners all drink a certain beverage, smoke a certain brand of cigar and keep a certain pet.

No owner has the same pet, smokes the same brand of cigar or drinks the same drink as another owner.

1: The Briton lives in a red house.
2: The Swede keeps dogs as pets
3: The Dane drinks tea
4: The green house is on the left of the white house (they are also next door to each other)
5: The green house owner drinks coffee
6: The person who smokes Pall Mall rears birds
7: The owner of the yellow house smokes Dunhill
8: The man living in the house right in the center drinks milk
9: The Norwegian lives in the first house
10: The man who smokes Blend lives next to the one who keeps cats
11: The man who keeps horses lives next to the man who smokes Dunhill
12: The owner who smokes Blue Master drinks beer
13: The German smokes Prince
14: The Norwegian lives next to the blue house
15: The man who smokes Blend has a neighbor who drinks water.

The question is: WHO KEEPS FISH ?