Help the stupid, what exactly is a common pleco's species?
@Naeco: It's not bristlenose for sure. Not really sure what species common actually is so... This guide, may help you identify it, and generally that website is very good when it comes to plecos etc. catfish.
Yours definetly has more dorsal rays than some plecos, so that's a good identifaction marker. Sailfin I think is the term they are commonly called, but there are many species of them. From the guide Pterygoplichthys -group seemed matching and looking through pics, there are couple species that at least somewhat match to your pleco (orangey color with dark spots, over 10 dorsals).