The video shows a group of small fish swimming in an aquarium. The fish are black and white in color, and they are swimming around the tank, which is decorated with green plants and brown driftwood. The water is clear, and there are small yellow pellets on the bottom of the tank. The fish are moving around the tank, some swimming near the surface while others are closer to the bottom. The aquarium appears to be well-maintained, with no visible algae or debris.