EDMONTON — At least one aspect of climate change makes even fish fretful. Ocean acidification — one of the consequences of an increasing level of carbon dioxide in the atmosphere — makes rockfish anxious, according to a newly published paper by a neuroscientist at Edmonton’s MacEwan University. “It’s actually very similar to a human being anxious at a very basic, fundamental level,” said Trevor Hamilton. “(The fish are) afraid of any sort of stimuli that could be harmful.” Hamilton and a colleague, biologist Adam Holcombe, were building on previous research that looked at the effect of ocean acidification on reef-dwelling fish....read more...