Description: English: Neogobius fluviatilis an invasive species from the Danube here in the river Rhine at Arnhem. Date: 21 August 2009. Source: Own work. Author: viridiflavus. Camera location 51° 58′ 16.78″ N, 5° 54′ 59.09″ E: View all coordinates using: OpenStreetMap - Google Earth: 51.971328; 5.916414.