It does differ wether a captive bred or wild specimen will be stronger, depending on the new circumstances they have to live in. But in general, wild ones are stronger than domestic ones. This is simply because of the fact that they had to live in various circumstances. It's almost the same as when we keep domestic ones in an outdoor environment during the better months of the year. These fish will become stronger than the ones kept indoors. The ones kept outdoors have experienced the fluctuations of the weather and temperature. The ones kept indoors have been living in a steady controlled situation. Therefore, they've not been exposed to fluctuations. Which makes them more vulnerable to changes in the parameters. But again, it does also differ per species itself how tolerable they are by themselves.