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 red house is immediately to the left of the green house.
2. Ben lives in the red house.
3. Ben does not own the fish.
4. Cleo lives in the blue house.
5. The owner of the cat lives in the green house.
6. The cat lives in the right house.

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