The video shows a person feeding fish in a large aquarium. The aquarium is filled with water and has several fish swimming around. The person is using a red bottle to pour food into the water, and the fish are eagerly eating the food. The aquarium is well-lit, and the fish are of different sizes and colors. The person is standing in front of the aquarium, and their hand is visible as they hold the bottle. The fish are swimming around the tank, some near the surface and others near the bottom. The water is clear, and the fish are moving around actively.