The video features a large aquarium filled with numerous goldfish of various sizes and colors, including orange, white, and black. The fish are swimming actively in the water, which is clear and well-maintained. The aquarium is equipped with a filter and air pump, as evidenced by the bubbles rising to the surface. The fish are seen swimming around the tank, occasionally coming up to the glass to interact with the camera. The lighting in the room is dim, with the main source of light coming from the aquarium itself, highlighting the vibrant colors of the fish.