Got a Gold Nugget L-18, Queen Arabesque L260 and a Ancistomus sabaji from TFD. The Gold Nugget went in the 120 and went into the castle decoration and up the spires never to be seen. The Ancistomus is hiding behind the intake tube in my 55 and the Queen is in a plastic rock cave in the same tank. I never see them. What Plecos besides the common ones are out most of the time? Maybe I need a big Red Cactus for my 120. The exotic plecos I have are small 2-3 inches. My common ones are about 6 inches long or longer.