Gammarus fossarum is Animal of the year 2021! It is an ambassador for healthy and diverse streams.


Amphipods are key organisms in aquatic communities. They exhibit essential roles in ecosystem functioning (e.g., leaf litter degradation) or as fish food, and are among the most successful invasive invertebrates. At the same time, they are commonly used as indicator taxa for biomonitoring and ecotoxicology.

This website is intended to provide an overview about the recent science and studies about amphipods in Switzerland, both for researchers and practitioners as well as laypersons.

Eawag has produced a short clip about the project which gives a nice overview. It is in German but has English subs.