Do fish feel pain?
Animal Welfare Institute Quarterly
The realization that mammals and birds are capable of experiencing pain and distress has had a profound influence on our relationship with them. The knowledge of this pain capacity has inspired a substantial number of laws, ordinances, regulations, and policies that dictate how mammals and birds can and should be treated when used for food and fiber production, in research, as companion animals, in zoological displays, and in many other situations. Although there is much work still to be done in improving the lives of these animals, no one should question that mammals and birds need to be protected from unnecessary pain and distress.
Schmidt, R. H. 2011. Do fish feel pain? Animal Welfare Institute Quarterly 60(1):27 [book review]