The Osetra Sturgeon, scientifically known as *Acipenser gueldenstaedtii*, is a species of sturgeon found primarily in the Caspian and Black Sea basins. This fish is known for its distinctive olive-brown coloration and can grow up to 2 meters in length. Osetra sturgeons are anadromous, meaning they migrate from saltwater to freshwater to spawn. Osetra sturgeons are highly valued for their roe, which is processed into caviar. The caviar produced by Osetra sturgeons is considered a delicacy and is often sought after for its rich flavor and unique texture. Due to overfishing and habitat loss, Osetra sturgeons are classified as endangered, prompting conservation efforts to protect their populations.