Quote:
Originally Posted by daniella3d
It may take a while before the cortisol level rise after a stress so they might have had plenty of time to take a sample without getting a stress response right away? could be.
then it could be that the fish returned to a normal level of stress after being handled so the stress hormones did not really rise. Maybe it take a constant amount of stress for this hormone to really show higher?
just my thoughts on it as I was wondering about the same thing when I read it.
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From what I know, cortisol levels in the average fish reach the highest levels around an hour after being stressed.