Research on fish pain and cognition has advanced dramatically in recent years, with evidence of complex cognitive abilities and pain responses reshaping welfare policy and public understanding.
Fish pain science has moved from genuine scientific controversy to reasonable consensus: fish are likely capable of experiencing pain-like states, though the subjective experience remains uncertain. The practical implications are substantial - commercial and recreational fishing practices that cause prolonged distress should be assessed against this evidence. Humanely slaughtered fish, with rapid stunning before killing, experience less suffering than those killed by ice or CO2 methods. Angling practices that minimise air exposure and handling time reduce welfare harm. Treating fish welfare as a genuine ethical consideration - not a fringe concern - is now the scientifically defensible position.