Pleco type?

[BaggiesBabe]

Hi!
Could you tell me what type of Pleco this is? is it a common Pleco that grows massive?
Thank you
Tracey

 

[fluttermoth]

Positively identifying young plecs can be difficult as so many of them look alike when they're small, but looking at the finnage I'm 90% certain that you have a sailfin/gibbiceps plec and yes, they do grow big; around 18" or perhaps 2 ft.