I wouldn't say that it's necessarily always bad. If your primary goal is to provide broodstock to inexpensively jump start a pond it can be successful. If your goal is to use these transported fish as your recreational fish, then you are taking fish in the prime of their lives, that have adapted to a certain system and asking them to change every thing that they know as far as foraging.
You should also consider the possibility that you will transport undesirable parasites that maybe wouldn't have found their way into the new pond.
I've seen situations where fish were moved from one small farm pond to another and did quite well, but if the receiving pond is brand new it might be better to show some patience.
Very interested in what some others feel about this situation.
Good? Bad? Sometimes both? Sometimes neither?
