The image displays an interior aquatic environment, specifically an illuminated freshwater aquarium

The image displays an interior aquatic environment, specifically an illuminated freshwater aquarium. The foreground features a Siamese fighting fish (Betta splendens) resting on dark grey gravel. This Betta exhibits a light pink/white body with flowing red and teal fins, positioned facing right. Below the gravel, a layer of dark brown substrate is visible. In the blurred background, several smaller fish, including at least two with orange and blue coloration and one primarily blue, are observed swimming amidst various green and reddish aquatic plants. A dark brown rock or piece of driftwood is partially visible in the upper right background. The image contains no discernible landmarks, architectural features, or unique environmental elements that would allow for the identification of a specific location within the city of Sofia, Bulgaria.