Farming remarks
Perca fluviatilis is a percid species that inhabits Eurasian inland and coastal waters and has been introduced in inland waters worldwide. The production of P. fluviatilis has emerged over the past decades while important biological processes of the species are not known yet. P. fluviatilis is a strong predator in the wild, and as such, an aggressive and cannibalistic fish in captivity – a constraint that is not properly prevented in farms yet. In fact, prey FISHES (e.g., roach, Rutilus rutilus, topmouth gudgeon, Pseudorasbora parva or other small cyprinids species) are added in monoculture systems to satiate the predatory nature of P. fluviatilis. It is also susceptible to stress and malformations in captivity. Tanks or raceways will most likely not fulfil space needs in intensive conditions. The biggest knowledge gap is on humane slaughter practices for this species. Further research is needed on both natural behaviour and physiological effects of farming practices in order to provide recommendations for improving fish welfare.
For details see: WelfareCheck | farm (latest major release: 2023-12-31)
For recommendations see: Advice | farm (latest major release: 2018-07-08)
Related news
Series 17 of the FishTalk programme about species covered in the fair-fish database is out. You will now find the condensed information in audio snippets of about 3 min for Penaeus vannamei (Whiteleg shrimp), Esox lucius (Northern pike), and Perca fluviatilis (European perch) – species we recently added to the database or whose profile we updated. Alternatively, you may find the episodes over at FishEthoGroup which is the producer of the podcast programme. Enjoy!
We gave the profile of Perca fluviatilis, the European perch, a major update since its initial release in 2016. Not just did the scores change in almost all of the 10 criteria; with potentially good welfare in migration, reproduction, aggregation, and substrate, it is now among the top 5 species covered in the fair-fish database. The question remains whether meeting 4 of 10 criteria is enough to justify keeping Perca fluviatilis in captivity. Find out which criteria are critical, in the WelfareCheck | farm.