The video shows a group of fish swimming in an aquarium. The fish are of different sizes and colors, with some having blue and orange stripes, while others are white with black spots. The aquarium is decorated with green plants and a brown rock, creating a natural underwater environment. The fish are seen swimming around the plants and rock, occasionally darting in and out of the frame. The water is clear, and the lighting in the aquarium highlights the vibrant colors of the fish.