zander, carp bream, common roach and common rudd, as well as the less common pike and rainbow trout. Cities Duisburg Oberhausen Essen Bottrop Gelsenkirchen Herne Recklinghausen Castrop-Rauxel Waltrop Datteln References and notes Canals in Germany Federal waterways in Germany Canals opened in 1914 CRhine-Herne