n artificial indoor waterfall with several koi fish swimming in the pool at its base

n artificial indoor waterfall with several koi fish swimming in the pool at its base. The waterfall is made of dark-colored rocks, with water cascading down multiple tiers. Some artificial plants and vines with white flowers decorate the rocks on either side of the waterfall. The water in the pool is relatively clear, revealing the colorful koi swimming around. The scene is dimly lit, creating a slightly dark and tranquil atmosphere.