Hi Cray
I thaught i'd throw in this http://www.nofima.no/en/nyhet/2013/03/salmon-smolt-on-training-camp
the research has been going on since 2008 and the results shows a 10% higer survival rate on the smolt that has been given training/excersise
compared to those that don't.
Less need for medication etc etc.......

cheers


PAUL