Each local store store is different. What you see online is not available at each store either. Before you buy, checkout EVERY tank for disease first, if you see any dead or sick fish DO NOT buy anything there.
That being said, so far I have had good luck at the big corporate stores...following the above rules.
There are literally 0 local fish stores in my city, they all closed, so I rely on petsmart for my fish. They are generally very healthy. I have only lost one, and that was the time I made the mistake of buying my fish the day the shipment came in.