The image shows a fish tank with a large, colorful fish swimming inside. The fish appears to be a Betta fish, commonly known as a betta or betta fish. The tank is filled with water and has a purple hue, which is typical for Betta tanks. The fish is swimming in a circular motion, and its body is visible from the side. The background of the image is dark, and there are some text elements at the bottom, but they are not clearly readable.