The video shows two large fish swimming in an aquarium. One fish is pale and circular with reddish fins. The other fish is brown and more elliptical. The aquarium has a rocky bottom covered in small pebbles. A few logs and fake plants are scattered around the tank. The water is clear and well-lit. A person is holding a phone in the bottom right corner of the screen, possibly recording the fish. There are other fish swimming in the background as well.