The image shows a large group of fish swimming in an aquarium. The fish are of different sizes and colors, with some being black and white speckled and others being silver. They are all facing towards the right side of the image, and their bodies are densely packed together. Some of the fish have long, thin fins that are spread out, while others are more elongated and pointed. The water is clear and there are small rocks visible in the background. The image appears to be taken from a low angle, looking up at the fish.