The video shows a fish tank with various types of fish swimming around. The fish are of different sizes and colors, including blue, red, and yellow. The tank is filled with green plants and rocks, creating a natural habitat for the fish. The water is clear, and the lighting is bright, making the colors of the fish and plants stand out. The fish are seen swimming in different directions, some near the surface while others are near the bottom of the tank. The plants sway gently with the water movement.