The video shows a fish swimming in an aquarium. The fish is seen swimming around the tank, which is filled with various types of plants and rocks. The water is clear, and the fish appears to be healthy and active. The aquarium is well-maintained, with no visible algae or debris. The fish's movements are smooth and graceful, and it seems to be enjoying its environment. The plants in the tank are of different shapes and sizes, adding to the overall aesthetic of the aquarium. The rocks are scattered throughout the tank, providing a natural-looking habitat for the fish. Overall, the video captures the serene and peaceful atmosphere of the aquarium, with the fish as the main focus.