Sevruga caviar Sevruga caviar Sevruga caviar is one of the highest priced varieties of caviar, eclipsed in cost only by the Beluga and Ossetra varieties. It is harvested from a variety of critically endangered sturgeon fish species, that are known for their small, grey colored eggs. In eastern Europe, it is harvested from the Sevruga sturgeon ("Acipenser stellatus"), the Sterlet sturgeon (Acipenser ruthenus) and the Siberian sturgeon ("Acipenser baerii"), which are native to the Caspian Sea and the surrounding rivers. Sevruga is the smallest of the caviar-producing sturgeons. It can grow as far as 150 lbs. in weight and 7 feet in
Sterlet become self-sustaining. Today, the majority of the international trade involves sterlets from aquaculture. The sterlet's main source of food is benthic organisms; they commonly feed on crustaceans, worms, and insect larvae. The sterlet commonly reaches the age of 22 to 25 years. Males reach sexual maturity at 3–7 years old and females at 4–12 years old. Spawning occurs from the middle of April to the beginning of June. Females may lay from 15,000–44,000 eggs, at water temperatures preferably 12–17 °C (54–63 °F). Sterlets require relatively large ponds with good water conditions, and may get entangled in plants such as blanketweed.