The image shows a large group of small fish swimming in an aquarium. The fish are of different sizes and colors, with some being silver and others being black and white. They are all facing towards the right side of the image and appear to be swimming close together. Some of the fish have long, thin fins and tails, while others have small, pointed fins. The water is clear and there are small bubbles visible in the background. The image is taken from a low angle, looking up at the fish.