Help! Cory Cat acting weird!

ILOVEBETTAS

It's Cory Lover's cat!
My 29 gallon has 7 cory cats. One of the albinos is not schooling with the others. It's moving very slowly and takes gulps of air 3x more than all the other cories. When it searches the gravel for food, it barely moves its barbel things. None of the others are doing this. What's wrong?
 
As long as it is eating and still able to swim correctly I wouldn't worry too much, but keep an eye on it anyway. Some of my cories gulp air more often than others, and once they get used to a tank they start to school less and less, just meeting up every so often to check on each other.
 
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