The image shows a large fish, specifically a salmon, in a glass tank. The fish is lying on its side and appears to be resting or sleeping. The tank is equipped with a filtration system and has a visible water pump. The background includes some greenery, possibly plants or aquatic plants, which are typical for fish tanks designed to mimic natural environments. The tank is likely used for the care and maintenance of the fish, as seen by the presence of the filtration system and the water pump.