never had them, but wanted to so i did a little research...from what I've seen fairly docile, great looking pleco...there are two sp of L200...Baryancistrus demantoides about 6" and Hemiancistrus subviridis about 7-8". other than size i don't really know the differences.
http://www.planetcatfish.com/catelog...species_id=223
http://www.planetcatfish.com/catelog...pecies_id=1805