The video shows a large aquarium filled with water and numerous small fish. The fish are swimming around in different directions, creating a lively and dynamic scene. The aquarium is well-lit, and the water is clear, allowing for a good view of the fish and their movements. There are no visible plants or decorations in the aquarium, and the focus is solely on the fish. The fish appear to be of the same species, with similar size and shape. They are mostly white with some black spots, and they have small fins and tails. The aquarium seems to be indoors, and there is no visible background or context beyond the aquarium itself.