The video shows a group of fish swimming around a coral reef. The fish are predominantly yellow and black in color, with some having white stripes. The coral reef is large and has a porous texture, with small holes and crevices where the fish can swim through. The fish are moving in and out of the holes, and some are swimming in groups while others are alone. The water is clear, and the lighting is natural, suggesting that the video was taken in a natural underwater environment.