A swarm of dark, likely freshwater fish swims densely in the dark, turbid water of a pond or enclosure. There are a few white or light colored fish interspersed among them. A metal grid-like structure borders the bottom of the frame. The fish are so numerous that their movements cause surface ripples, making the water appear agitated. The camera remains stationary, offering a top-down view of the fish mass. The background is unclear, focusing attention solely on the swarm in the water.