The video shows a close-up of a fish tank with several fish swimming around. The fish are of different colors, including red, white, and black. They are swimming around in the water, which is clear and has green plants in it. The fish are moving around the plants and each other, creating a lively and dynamic scene. The tank appears to be well-maintained, with clean water and healthy-looking fish. The lighting in the tank is bright, highlighting the colors of the fish and the greenery of the plants.