In the video, we see a large fish swimming in an aquarium. The fish has a black body with a white stripe running down the middle of its body. It has a large mouth and fins that are spread out as it moves through the water. The aquarium is filled with small pebbles on the bottom, and there are some rocks and plants visible in the background. The fish moves slowly and gracefully, occasionally opening its mouth as if it is about to feed. The lighting in the aquarium highlights the fish's features and the shimmer of the water.