Perch spawn

Perch spawn: Spawn from perches (Perca fluviatilis) and some freshwater polyps (hydra vulgaris). These seem to be from a different species than in the previous picture. — Nikon D200, Nikkor AF Micro 60mm, Lake Zug, Restaurant Baumgarten, 19 May 2013. Nikon D200, 1/250 s, F/22.0, 60 mm, ISO 200, Sunday, May 19, 2013 10:43:24