What Kind Of Pleco Does This Look Like? ?

[StaceyMae]

Just got a new pleco for my 150 gallon. I bought it at a shop but the "expert" was absent at the time. The guy that sold it to me just knew it was a pleco but he wasn't sure what type. I wasn't that worried considering my tank size, but I would still like to know its ID if possible for adequate care and curiosity. I hope the pictures are good enough! It was difficult to get a good one.
Thanks for any help identifying!

 

[Demeter]

Looks like a common to me. It should be alright in a 150gal for quite a while.

 

[StaceyMae]

Looks like a common to me. It should be alright in a 150gal for quite a while.

I thought maybe a bristlenose at first, but it could be a common.. hopefully someone else can give a second opinion!

 

[NeptuneR]

Looks like a common

 

[goldface]

Common. Looks nothing like a bristlenose.

 

[StaceyMae]

Common. Looks nothing like a bristlenose.

Oh okay. Here's a better photo.

 

[goldface]

Oh okay. Here's a better photo.

My opinion remains the same. Now the exact species of common (there are several different species sold under the common nomenclature), I don't know.

 

[chromedome52]

Gold Spot Sailfin, Pterygoplichthys joselimaianus, youngster. They supposedly can reach 12 inches, but I haven't seen any that big yet.