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 gray. They are swimming around and interacting with each other in the water. The tank appears to be filled with rocks and pebbles, creating a natural environment for the fish. The fish are moving around freely, and there is no visible food or other objects in the tank. The water is clear, and the lighting is bright, allowing for a good view of the fish and their surroundings.