The Asp (Aspius aspius) Danube Delta

The asp (Aspius aspius) is a relatively common European freshwater fish, which can be found in dead waters and streams, from the Rhine to the Urals. In the Danube Delta, the asp can be found even in the Black Sea's waters, where the Danube flows and refreshes the salted sea water... see more - https://www.videoguide.ro/en/the-asp-aspius-aspius-danube-delta.html