The video shows a fish swimming in a tank of water. The fish has a long body with fins and a tail. It appears to be a type of catfish, with a wide mouth and a pointed snout. The fish is mostly dark in color, with some lighter areas on its body. It moves slowly through the water, occasionally turning and twisting its body. The tank is well-lit, and the water is clear, allowing for a good view of the fish. There are no other fish or objects in the tank, and the background is a plain, light-colored wall.