This was labeled as a loach, but I can't find any info. It has a suckermouth like a pleco, but is apparently a loach. It acts like a loach. It's very spastic, and it was tough even to get this crappy photo.
OK. According to one of the experts at http://www.loaches.com/ your fish is not a loach; it is a cyprinid known as Garra flavatra. He said to make sure your tank has a secure top and to check out this link:
That's a positive ID. Thanks for the info. In retrospect, the fish does look like a cyprinid, but with a pleco type mouth. It acts like a combination of a pleco and a loach.