The video shows a close-up of a saltwater aquarium with two fish swimming. The foreground fish is a Sohal surgeonfish, distinguished by its white body with thin black stripes and a yellow marking near its gill cover. It has a pointed snout and a crescent-shaped tail fin with blue and black edges. In the background, a purple tang with a yellow tail swims near a coral formation. The aquarium features a rocky, textured environment with various shades of purple and brown, suggesting a coral reef habitat. The water appears clear.