I introduced my male betta into a planted tank with four schwartzi corydoras about a half an hour ago. The betta swims up to them every now and then, but they always dart off when he gets too close. At one point, one of the cory's darted quickly at him and then both groups quickly swam off in opposite directions.
I haven't noticed any nipping from either party, but the cory's have stopped their foraging behavior and pretty much stay put until the betta gets too close. Some will continue to forage after a while, but at least one tends to stay mindful of where they are in relation to Pancho (betta). Once he does get too close they again dart off around the driftwood or to the other side of the tank. Pancho is being very active, but again doesn't seem to be flaring or nipping at the cory's.
I feel they are still in the uneasy period where they are dealing with an introduction. As I'm typing, the cory's are going back to their normal behavior, but haven't seen Pancho recently. I'll keep watching for changing behavior, but my question is at what point do I determine if this is too stressful of a change for the cory's? Should I give them until late this evening to see if they become more accustomed to each others presence? Possibly wait until the morning? No aggression at this point... just skittish.