Summary:
- This article discusses scientific research that shows rainbow trout and other fish can experience extreme pain and suffering when killed by being exposed to air, rather than being killed quickly and humanely.
- The study found that fish have nociceptors, which are receptors that detect pain, and that when exposed to air, the fish exhibit behaviors and physiological responses indicating they are experiencing significant distress and pain.
- The findings suggest that more humane methods of killing fish, such as stunning them before death, should be used in commercial fishing and aquaculture to minimize the suffering of these animals.