The video shows a close-up of a fish tank with a variety of fish and coral. The fish are swimming around and interacting with each other, while the coral sits stationary in the background. The colors of the fish and coral are vibrant and varied, creating a lively and dynamic scene. The fish are of different sizes and shapes, and their movements are smooth and graceful. The coral appears to be healthy and well-maintained, with its colors ranging from bright yellows to deep purples. Overall, the video captures the beauty and diversity of marine life in a controlled environment.