Since I work mids currently, I have a BUNCH of free time and found the best site so far with many plecos and their names and L #'s. Check this site out for all those mystery plecs http://www.ekkwill.com/wildplecos.html .... also their main site http://www.ekkwill.com/index.html .... Many cool pictures in their picture gallery. Also, It's kind of cool to see where the fish you buy at the stores come from and how they are raised.