Gutts haven't been around lately on any stock lists I've seen. A fish labeled as "Zonatus" has been around. I've seen them in person and they look very similar to what the OP has. There's some controversy on these species IDs in general, so a mystery fish ID is going to a little difficult to be actually IDed and agreed upon.
So, it's 100% vieja/paratheraps. It could be Zonatus or closely related, but whatever it is it will get pretty big and have some attitude.
Was the store actually selling that as uaru?