Description: The wide mouth gape of Neogobio kessleri. Neogobius kessleri an invasive species from the Danube here in the river Rhine at Arnhem. Date: 21 August 2009. Source: Own work. Author: viridiflavus. Camera location51° 58′ 16.78″ N, 5° 54′ 59.09″ EView all coordinates using: OpenStreetMap 51.971328; 5.916414.
Description: English: Caught Cottus Gobio in Dutch river the Merwede. Nederlands: Gevangen Cottus Gobio (Donderpad) in rivier de Merwede. Date: 27 July 2010. Source: Stefan Clement. Author: Stefanclement. Other versions: cottus gobio.
Description: English: Neogobius fluviatilis and Neogobius kessleri, two invasive species from the Danube caught in the Rhine. Neogobius fluviatilis prefers sandy bottomes, N. kessleri rocky bottoms, which is reflected in the color. The ligh sany colored fish is Neogobius fluviatilis. Neogobius kessleri has a wide mouthgape which it uses to predate on juvenile cyprinids. 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.