The video shows a person's hand reaching into an aquarium and feeding the fish. The fish are swimming around and eating the food. The aquarium is filled with colorful rocks and plants, creating a beautiful underwater scene. The fish are of different sizes and colors, adding to the diversity of the aquarium. The person's hand is careful not to disturb the other fish while feeding the ones that are closer to the surface. The water is clear, and the lighting in the aquarium highlights the vibrant colors of the fish and the plants.