The video features a group of discus fish of various colors and patterns swimming in an aquarium. The fish are seen moving around the tank, with some swimming towards the camera and others away. The aquarium appears to be well-maintained, with clear water and no visible debris. The fish display a range of colors, including red, blue, yellow, and white, with some exhibiting unique patterns and markings. The lighting in the tank highlights the iridescent quality of the fish's scales, creating a vibrant and dynamic visual effect.