视频展示了一条黑白相间的鱼在水族箱中游动的场景。鱼的身体上有明显的黑色条纹，背景中有绿色的水草和一些岩石。鱼在水中缓慢移动，周围环境显得非常自然和宁静。
The video shows a close-up of a black and white striped fish swimming in an aquarium. The fish is moving slowly, exploring its surroundings which include rocks and green aquatic plants. The background is slightly blurred, highlighting the fish as the main subject. The lighting creates a warm and natural underwater ambiance.
A fish with black and white stripes is seen near a rock and some green aquatic plants in an aquarium. The fish lowers its head and uses its mouth to pick up some sand from the bottom of the tank. The fish then raises its head, holding the sand in its mouth. Finally, the fish expels the sand from its mouth.