The video shows a fish swimming in the dark water. The fish is illuminated by a light source, making it visible against the dark background. The fish appears to be a pike, with a long body, pointed snout, and a pattern of dark spots on its skin. The fish moves gracefully through the water, its fins and tail gently propelling it forward. The light source seems to be coming from above, casting a glow on the fish's body and highlighting its features. The water is otherwise dark, with no other objects or creatures visible in the frame. The video captures the serene and mysterious underwater world, with the pike as the main focus.