Do Fish feel Pain?

https://awionline.org/awi-quarterly/2011-winter/do-fish-feel-pain
http://www.sciencedaily.com/releases/2013/08/130808123719.htm

http://www.peta.org/issues/animals-used-for-food/factory-farming/fish/fish-feel-pain/
http://www.dailymail.co.uk/sciencetech/article-2662297/Fish-feelings-Expert-claims-creatures-experience-pain-way-humans-better-treated.html

http://www.amazon.ca/Fish-Feel-Pain-Victoria-Braithwaite/dp/0199551200
http://bio.psu.edu/directory/vab12