Danube
The Danube was once a long-standing frontier of the Roman Empire, and today flows through 10 countries, more than any other river in the world. Originating in Germany, the Danube flows southeast for , passing through or bordering Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova and Ukraine before draining into the Black Sea. Its drainage basin extends into nine more countries. The Danube river basin is home to fish species such as pike, zander, huchen, Wels catfish, burbot and tench. It is also home to a large diversity of carp and sturgeon, as well as salmon and trout. A few species of euryhaline fish, such as European seabass, mullet, and eel, inhabit the Danube delta and the lower portion of the river.
Danube school
The Danube School or Donau School (German: "Donauschule" or "Donaustil") was a circle of painters of the first third of the 16th century in Bavaria and Austria (mainly along the Danube valley). Many also were innovative printmakers, usually in etching. They were among the first painters to regularly use pure landscape painting, and their figures, influenced by Matthias Grünewald, are often highly expressive, if not expressionist. They show little Italian influence, and also represent a decisive break with the high finish of Northern Renaissance painting, using a more painterly style that was in many ways ahead of its time.