The video shows a group of fish in an aquarium. The fish are of different sizes and colors, including orange, black, and white. They are swimming around and eating from a red plant in the water. The aquarium is well-lit, and the water is clear, allowing for a good view of the fish and their surroundings. The fish are moving around actively, and their fins and tails are visible as they swim. The red plant appears to be a type of algae or aquatic plant, and it is the main focus of the fish's attention. The fish are seen nibbling on the plant, and some are even holding onto it with their mouths. The aquarium appears to be well-maintained, with no visible debris or waste. Overall, the video provides a peaceful and calming view of the fish in their natural habitat.