A large, light-colored ray with reddish markings on its back actively swims in a spacious glass aquarium, its broad, flattened body undulating gracefully. The water in the tank is clear and appears to have a blue tint, possibly from lighting or the tank's construction, with visible aeration bubbles near the surface. Beneath the ray, other fish are visible at the bottom of the tank. One is an elongated, speckled fish resembling a gar, while another, darker fish with a mottled pattern rests further back. The tank features a metallic frame and a tiled border along its base. The scene is an indoor commercial setting, likely a seafood market or a restaurant with live tanks in Đà Nẵng, Vietnam. The background shows an expansive space with numerous overhead lights, some recessed and emitting a cool blue glow, illuminating shelves or displays beyond the tanks. No people are visible, and there is no discernible text in the video. The artificial lighting suggests it could be any time of day or night.