no problem picking up a serpent star, and air is okay as well, as long as it's quick (ie the time it takes you to walk over to the other tank).
Just moved one myself a week ago, and he got over the shock (acclimated him first, of course) within 10 minutes.
Now he's out and about, and often fights with my emeral crab for food (serpent star always wins, too).
--Me