SLU's knowledge bank

Hang your hat on fish welfare!

Last changed: 14 October 2021

All fish kept by humans must be stunned before slaughter. However, how to do this in an ethically defensible manner is unclear. The lack of knowledge when it comes to stunning methods for fish is based on the difficulty of verifying whether a fish is unconscious or not.

Read the article in SLUs Knowledge bank (the content is in Swedish).

Link to the article


Bowman J, Hjelmstedt P, Gräns A. 2019, Non‐invasive recording of brain function in rainbow trout: Evaluations of the effects of MS‐222 anaesthesia induction. Aquaculture Research 50, 3420–3428.


Albin Gräns
Researcher at the Department of Animal Environment and Health; Division of Environment, Care and Herd Health, SLU                                                        

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