Zingel Streber
The streber (Zingel streber), also known as the Danube streber, is a species of freshwater ray-finned fish in the family Percidae.
It is found in strongly flowing waters in the Danube and Dniester drainages. It can reach 22 cm in length.
Endangered species in Croatia, the main reason for the decrease in numbers is due to water pollution.