The video shows a large fish swimming in a river. The fish is brown with black spots and has a long body and fins. It swims gracefully through the water, moving its fins and tail to navigate the river. The water is clear, and the riverbed is visible, covered in rocks and pebbles. The fish appears to be alone in the river, and there are no other fish or objects in the water. The video captures the peaceful and serene movement of the fish as it swims through the river.