American Crayfish
Fig. 9: The american crayfishs (Orconectes limisosus) was introduced in the local waters and almost replaced the local species. — Nikon D200, Nikkor AF-S Micro 2.0/105mm, Lake Zug, Strick, 2 July 2009 Nikon D200; Δt=1/250 s; f=105 mm; f/11.0; ISO 100; 2 July 2009 19:39:29