In the video, a red fish is swimming in an aquarium with green plants. The fish is moving around the tank, and at one point, it swims near a white fish. The aquarium appears to be well-maintained, with clear water and healthy plants. The red fish has a vibrant color and seems to be the main focus of the video. The white fish is also visible but not as prominently featured. The aquarium seems to be a home or office setting, as there are no other objects or people visible in the video.