The starry sturgeon, Acipenser stellatus, also known as stellate sturgeon at Danube Delta Eco-Tourism Museum Center aqaurium in Tulcea, Danube Delta, Romania (captive). DIGITALLY CLEANED. It is considered critically endangered by the IUCN and international trade in this species (including its caviar) is restricted by CITES. The starry sturgeon is an anadromous species, which migrates up rivers to spawn and reach 220 cm (7.2 ft) in length and weighs up to 80 kg (180 lb). The starry sturgeon feeds on fish, worms, crustaceans and mollusks.