Well, for every
assistant professor and
doctoral student who conducts a study and concludes that fish MAY feel pain, we also have doctors like Dr. James D. Rose, a professor of zoology and physiology at the University of Wyoming who has spent 30 years (God bless him) working on questions of neurology, examining data on the responses of animals to painful stimuli.
In 2003 Rose published a landmark study in the journal
Reviews of Fisheries Science, concluding that animals need specific regions of the cerebral cortex in order to feel pain. And fish do not have them.
Link
Here is a link to the
full study. Abridged version
here.
A BBC
article cites Dr. Bruno Broughton, a fish biologist adding: "I doubt that it will come as much of a shock to anglers to learn that fish have sensory cells around their mouths. Nor is it a surprise that, when their lips are injected with poisons, fish respond and behave abnormally.
"However, it is an entirely different matter to draw conclusions about the ability of fish to feel pain, a psychological experience for which they -- literally -- do not have the brains (to)."
The Garner study from the perspective of this individual with a minute exposure to the methodologies of experimental psychology am surprised that they seem to have made such far reaching conclusions from experiments with a significant amount of extraneous variables in it.
I took up BIOPSYCH in college too many times to feel a bit insulted that we seem to be alluding to a fish brain having similar capacities of pain comprehension to us.
The experience of pain depends on functions of our complex, enlarged cerebral hemispheres. The unpleasant emotional aspect of pain is generated by specific regions of the human cerebral hemispheres, esp the frontal lobes. The functional activity of these frontal lobe regions is closely tied to the emotional aspect of pain in humans and damage of these brain regions in people eliminates the unpleasantness of pain. These regions do not exist in a fish brain. Therefore, a fish doesn’t appear to have the neurological capacity to experience the unpleasant psychological aspect of pain. (From Dr Rose's study)
I am sure there are millions of things that people in general can disagree about and both can feel strongly about it, backed up by their own individually valid reasons why, this might be one of those.
Am gonna go downstairs now to my pond and stab my RTC with my tongs, just for fun.