The video features a single red Betta fish with long, flowing fins and tail. The fish is swimming in a clear glass aquarium filled with water. The Betta fish's scales have a shiny, iridescent quality, and its fins and tail are spread out, showcasing their full length and shape. The aquarium appears to be well-maintained, with no visible debris or algae. The fish moves gracefully through the water, occasionally turning and twisting its body. The video is shot from various angles, providing a comprehensive view of the fish and its surroundings.