Orconectes limisosus

Orconectes limisosus: Close-up of the head of the american crayfish (Orconectes limisosus). — Nikon D200, Nikkor AF-S VR Micro 105mm, 2 x Sea&Sea YS-110α, Lake Zug, Fischchratte, 26. Mai 2013. Nikon D200, 1/250 s, F/32.0, 105 mm, ISO 100, Sunday, May 26, 2013 09:26:41