Three houses stand in a row, numbered 1 (left), 2 (middle) and 3 (right). Each house has a different color (red, green, blue), a different owner (Ana, Ben, Cleo) and a different pet (cat, dog, fish).

1. The owner of the dog lives in the red house.
2. Ana lives in the green house.
3. Cleo does not own the dog.
4. The red house is immediately to the left of the blue house.
5. The dog lives in the middle house.
6. The owner of the fish lives in the green house.

Who owns the fish? Give the full arrangement of colors, owners and pets, and show how each clue fixes it.
