I'm relieved to hear the cory is OK, can we presume they're both fine?
Sorry to hear about the minnow, did it die still in the bag or after it went in the tank? Was it showing signs of distress at all and did the others look ok? Occasionally a fish which might be weak to begin with may succumb to the stress of being moved, hopefully the rest will be fine once they've had a chance to settle in. Let us know how you get on.
Garden shed full of tanks (tropicals) and a pond.
Without understanding, knowledge is worthless