Report on Perch
The professional fishery caught 26.5 tons of perch in 2017 – a decrease by 1.7 tons (6%) compared to the previous year. This result represents the second lowest yield within the last 80 years after the record low in 2015. Larger catches were only achieved in the months of August, September and October. In the reviewed year, the perch accounted for almost 9% of the total catch. The gill parasite (Ancyrocephalus paradoxus), recorded since 2013, increased slightly (8%) in Romanshorn compared to the previous year. At other places this parasite is no longer found in perches, but in Vorarlberg it is found in 6% of the perch caught.