The video shows a group of fish swimming in an aquarium. The fish are black and yellow in color and are of the same species. They are swimming around a large rock and a piece of driftwood. The aquarium is decorated with green plants and has a sandy bottom. The fish are moving around the tank, some swimming near the surface while others are near the bottom. The water is clear and the lighting is bright, making the colors of the fish and the plants stand out.