Description: Snake at Hirkan National Park : This is a photo of a natural site in Azerbaijan identified by the ID 1.1. Date: 20 April 2013, 12:48:24. Source: Own work. Author: Naturefriends.
Description: English: Tha range of the round goby (Neogobius melanostomus) in North America. Red spots - places of introduction Українська: Ареал бичка-кругляка (Neogobius melanostomus) у Північній Америці. Червоні круги - місця інтродукції. Date: 14 August 2011. Source: Own work. Author: Yuriy Kvach.
Description: English: Neogobius melanostomus also has the bulging eyes Nederlands: Neogobius melanostomus also has The bulging eyes. Date: 19 May 2012. Source: Own work. Author: Peter van der Sluijs.
Description: English: Neogobius melanostomus a large gudgeon Nederlands: Zwarbekgrondel vrij groot. Date: 23 April 2012. Source: Own work. Author: Peter van der Sluijs.
Description: English: Round gobies are thieves and robbers Nederlands: Rovers en dieven zijn zwartbekgrondels. Date: 13 August 2017. Source: Own work. Author: Peter van der Sluijs.
Description: English: Suction Cup and they sit among the rocks stones that round gobies Nederlands: Zuignap en ze zitten tussen de rotsen stenen die zwartbekgrondels. Date: 19 June 2017. Source: Own work. Author: Peter van der Sluijs.
Description: English: Round goby on a with background Nederlands: Zwartbekgrondel op een witte achtergrond. Date: 14 July 2013. Source: Own work. Author: Peter van der Sluijs.
Description: English: Sucker of a zwartbek goby Nederlands: Zuignap van een zwartbekgrondel. Date: 5 July 2012. Source: Own work. Author: Peter van der Sluijs.
