The image shows a large fish swimming in an aquarium. The fish appears to be a carp, with a long, slender body and a pointed head. It has a green body with red and black stripes running along its length. The body of the fish is covered in scales, and it is swimming towards the right side of the image. The aquarium is filled with water, and there is a small amount of green algae visible in the background. The walls of the aquarium are made of concrete, and the floor is made of red tiles.