dylema
Fishaholic
Thats not a Bristlenose. I think it may be a blue seam and or L183. Looks about 2"? The guy at the pet shop doesnt know his fish all too well if he thinks thats a bristlenose.
Bristlenose is a generic term for the Ancistrus genus. I am quite sure L183 is an Ancistrus species so it may then be called a bristlenose.