The image shows a large fish swimming in an aquarium. The fish appears to be a sturgeon, with a dark grey body and white markings on its body. It is swimming towards the right side of the image, with its head above the water and its mouth open, as if it is about to take a bite out of something. The water is a light blue-green color and there are a few small fish visible in the background. The aquarium is filled with various plants and rocks, and there is a metal railing visible on the bottom right corner.