The video shows a close-up of a fish swimming in an aquarium. The fish is mostly hidden behind the rocks and coral, but its head and tail are visible as it moves around. The aquarium appears to be well-maintained, with clear water and a variety of plants and decorations. The fish is small and has a sleek body, with a mix of dark and light colors. It swims calmly, occasionally darting between the rocks and coral. The lighting in the aquarium highlights the vibrant colors of the plants and decorations, creating a serene and peaceful atmosphere.