Four houses in a row, who owns the fish?

Four houses stand in a row, numbered 1 to 4 from left to right. Each has a different colour (red, blue, green, white), a resident of a different nationality (English, Spanish, Japanese, Norwegian) and a different pet (dog, cat, bird, fish).

1. The Norwegian lives in house 1.
2. The Norwegian lives next to the blue house.
3. The green house is immediately to the right of the white house.
4. The Englishman lives in the green house.
5. The Spaniard owns the dog.
6. The cat lives in the blue house.
7. The Japanese lives next to the bird's owner.

Who owns the fish? Fill in the whole table.