

The sterlet (Acipenser ruthenus) at Danube Delta Eco-Tourism Museum Center, aquarium in Tulcea, Danube Delta, Romania (captive). It is a small species of sturgeon native to large rivers that flow into the Black Sea, Azov Sea and Caspian Sea, as well as rivers in Siberia. Populations migrating between fresh- and saltwater (anadromous) suffering due to overfishing (for its flesh, caviar and isinglass), pollution and dams. The sterlet has declined throughout its native range and is considered...
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Copyright Magnus Lundgren/Rewilding Europe
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