The image is a close-up of an aquarium with a large fish swimming in the water. The fish appears to be a large, greenish-blue color and is swimming towards the right side of the image. The water is clear and there are a few rocks visible in the background. The image is taken from a low angle, looking up at the fish and the fish. There is a bright green light shining down on the fish, creating a tunnel-like effect. The background is dark, making the fish stand out even more.