The video shows a group of blue fish swimming in an aquarium. The fish are of various sizes and are seen swimming around a large piece of driftwood that is placed in the center of the tank. The driftwood has a rough texture and is covered in algae. The aquarium is filled with small, light-colored gravel, and the water appears to be clear. The fish are moving in different directions, some swimming near the driftwood while others are seen in the background.