The Danube is Europe's second longest stream, after the Volga. The Danube was at one time a long-standing outskirt of the Roman Empire, and today courses through 10 nations, more than some other waterway on the planet. Beginning in Germany, the Danube streams southeast for 2,850 km (1,770 mi), going through or flanking Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova and Ukraine before depleting into Its seepage bowl stretches out into nine additional nations. The Danube stream bowl is home to angle species, for example, pike, zander, huchen, Wels catfish, burbot and tench. It is likewise home to a huge assorted variety of carp and sturgeon, just as salmon and trout. A couple of types of euryhaline fish, for example, European seabass, mullet, and eel occupy the Danube Delta and the lower bit of the waterway.