The video shows a close-up of a fish tank with various fish swimming around. The tank is filled with rocks and coral, and the fish are of different sizes and colors. Some of the fish are yellow, while others are blue and white. The water in the tank is clear, and the lighting is bright, highlighting the vibrant colors of the fish and the intricate details of the coral and rocks. The fish are swimming around calmly, occasionally darting in and out of the rocks and coral. The video captures the peaceful and serene atmosphere of the fish tank, with the gentle movement of the fish creating a soothing visual experience.