The video shows a fish swimming in a tank with rocks and gravel. The fish is seen swimming around the tank, occasionally coming up to the surface. The tank appears to be well-maintained with clear water and no visible debris. The fish is of medium size and has a sleek body with a shiny appearance. The rocks in the tank are of various sizes and colors, including shades of brown, gray, and red. The gravel at the bottom of the tank is a mix of white and gray pebbles. The fish moves gracefully through the water, occasionally brushing against the rocks and gravel.