In the video, we see a group of fish swimming in an aquarium. The fish are of different sizes and colors, including orange, white, and black. They are swimming around the tank, which is decorated with rocks and plants. The fish seem to be healthy and active, moving around the tank with ease. The water in the tank is clear, and the lighting is bright, allowing us to see the fish clearly. The aquarium appears to be well-maintained, with no visible debris or algae. Overall, the video provides a peaceful and calming view of the fish in their environment.