Bleah! She told me that they're usually found on goldfish. When I kept orandas, I used to pray that I'd never end up with those things, because I wouldn't know how to get them off without being afraid I'd hurt the fish.
I'm going there on Thursday to see if they got my fish in. They let me special-order some loaches and Siamese algae eaters, since I buy fish from them a lot!

I'll take my camera in case they're still there. And let me tell you, the water they were in STUNK! I don't know if it was from the customer's aquarium, but I've never smelled tank water that bad before. It was nauseating.