In the video, there is a large fish swimming in a tank of water. The fish is moving around the tank, and its movements cause the water to ripple and splash. The fish appears to be healthy and active, and the tank seems to be well-maintained. The water is clear, and the fish's scales reflect the light, giving it a shiny appearance. The fish's fins and tail are moving smoothly as it swims, and it seems to be enjoying its environment. The tank is not visible in the video, but the water is a bright blue color, indicating that it is clean and well-oxygenated. The fish is the only living creature visible in the video, and it appears to be the only focus of the footage.