Colorful fishes in Street canal at Japan

This is Shimabara City, in Nagasaki. Those are not drainage canals, they are streams of natural spring water. Even the larger river in the final picture is fed by natural springs. I lived on the banks of this river about a mile above this picture, and it was usually dry up there, but flowing in town. The more picturesque, wider sections of stream are on Carp Street, which is a tourist attraction. Most of the the springs are cold (my bank had a natural drinking water spring in the parking lot), and though th