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Belene, 18 November 2014. WWF has released some 5,000 sterlets into the Danube River today as part of a 50,000-strong sturgeon restocking programme. This is the first restocking of endangered sturgeons performed by a non-government organization in Bulgaria, after years of scientific research, climatic and biological challenges.

Sturgeons are sensitive to environmental pressures and therefore valuable indicators for healthy rivers. This is why the ICPDR has endorsed sturgeons as flagship species. There are six species of sturgeons native in the Danube River Basin, but the survival of these ancient fish is threatened by a range of issues. Through the "Danube Sturgeon Task Force", the ICPDR contributes to actions such as the protection of habitats, the development of migration aids, the breeding of healthy stocks in sheltered facilities, or the struggle against illegal fishing and caviar trade.