The video shows a large fish swimming in an aquarium. The fish has a long body and a pointed nose, and it is swimming around the tank. The water in the tank is clear, and there are bubbles visible on the surface. The fish is the only one in the tank, and it appears to be healthy and active. The lighting in the tank highlights the fish's scales, which are shiny and reflective. The fish moves smoothly through the water, occasionally turning and twisting its body. There is no visible title or subtitle in the video.