The video shows a large aquarium filled with various fish. The fish are swimming around in the water, and some are being fed by a person's hand. The aquarium is well-lit, and the water is clear, allowing for a good view of the fish and their movements. The fish come in different sizes and colors, with some having bright blue and purple hues, while others are more muted in color. The person feeding the fish is only partially visible, with their hand entering the frame to drop food into the water.