The video shows a group of fish swimming in a tank. The fish are of different sizes and colors, with some being orange and others being white. They are swimming around in the water, and some of them are near the surface while others are near the bottom of the tank. The tank appears to be well-maintained, with clear water and no visible debris. The fish are moving freely, and there are no visible signs of stress or agitation. The lighting in the tank is bright, allowing for a clear view of the fish and their surroundings.