The video shows a fish tank with a blue background and a sandy bottom. There is a colorful coral reef in the center of the tank. Several small fish are swimming around the reef. The fish are of different colors, including blue and yellow. The coral reef is made up of various colors such as green, orange, and purple. The fish are moving around the reef, some swimming in groups while others swim alone. The water in the tank is clear, and the lighting is bright, highlighting the vibrant colors of the fish and the coral reef.