The video shows a yellow fish with black stripes swimming in an aquarium. The fish is seen swimming around a small yellow snail that is sitting on the sandy bottom of the tank. The fish appears to be curious about the snail and approaches it several times. In the background, there are other fish swimming around, and a black object can be seen in the top right corner of the tank. The water in the tank is clear, and the lighting is bright, highlighting the vibrant colors of the fish and the snail.