My Pleco, Zoidberg

[steelshade]

Looks like my pleco "Fluffy", but with a couple more dorsal rays than mine.

 

[cymrufem]

Pterygoplichthys Pardalis (one of many plecos considered a "common") and pterygoplichthys gibbiceps(gibby) both have 11 or more dorsal rays. I believe you may be thinking of hypostomus species wich many are also sold as commons and have 8 dorsal rays or less. So, that is a common IMO.

Thanks for the heads-up. Sorting out plecos can be confusing