GW local populations adapt over time so even if they are genetically the same species they can exhibit different traits. The one I would be concerned about is their ability to survive Ga summers. As a general idea the studies on fish (LMB and BG) take the position that its best not to stock fish from widely different populations. For example not only did Fla LMB do very poorly in cold climates (grew poorly and died in some locations) a control group of Northern LMB from the south also did poorly (better than the Flas but much worse than local fish). One thing to remember about genetics is new genes (change) in a natural setting often produces negative results and nature cures it by non-viability (extinction/death). Other times the change works and a species becomes better adapted. The point is adding new blood (new genes) is not necessarily a good thing -- It all depends.

This does not address the potential of introduced pathogens anytime a fish moves from one population/pond to another.