Thorn back box fish?

[Dflyons12]

Today I bought what the store is calling a thorn back box fish. It looks similar to photos on the internet but slightly different. Was wondering if anybody knows if he is a thorn back or some other kind of boxfish?

 

[blaxsun]

This is what a Thorn Back looks like, so maybe.

 

[i cant think]

I'd say thornback, looks to be a juvenile.
heres a juvenile thornback, the picture above looks to be an adult.

 

[ReeferHD]

Not a thornback, ive owned one of these, its a humpback turretfish/cowfish, Tetrosomus Gibbosus. my favorite fish.