Fig. 34: The american crayfish (Orconectes limisosus) ... some also call it McDonalds crayfish ... was introduced into these waters to give the fishers something to catch because the european crayfish was suffering from a disease. Today they had almost disappeared. — Nikon D200, Nikkor AF Micro 60mm, Lake Zug, Restaurant Baumgarten, 19 May 2013 — EXIF: Nikon D200; Δt=1/250 s; f=60 mm; f/22.0; ISO 200; 2013-05-19 11:07:28
