The image displays an underwater scene within an aquarium, identified as being located at the Varna Aquarium in Varna, Bulgaria

The image displays an underwater scene within an aquarium, identified as being located at the Varna Aquarium in Varna, Bulgaria. Two fish, consistent with a species of horse mackerel (genus *Trachurus*), are present. The prominent foreground fish, positioned centrally and slightly to the right, exhibits a silvery-blue body with a distinct black spot behind its operculum and a yellowish caudal fin. It is oriented horizontally, swimming to the right. A second, smaller fish of the same species is visible in the mid-background, positioned higher and to the left of the foreground subject, also facing right. The aquatic environment features a light tan sandy bottom with scattered small detritus. The background consists of dark blue water with indistinct dark rock formations partially visible on the left side. Fine particulate matter is suspended throughout the water column. A light-colored structural bar or ledge is visible at the bottom edge of the frame, indicating the base of the aquarium tank. No human subjects are visible.