I have 2 wild L134 plecos....2 caves in the tank (90 tall with a bunch of other fish) and I have not noticed 2 plecos together in either cave...always just one in each...but I have not been paying full attention to them all the time. I noticed today the one that looks like a male (smaller in girth) fanning...the side fins and his tail 1/2 way out the cave. I looked in the cave with a flashlight but didnt see anything that looked like eggs in it. For what reason would he be fanning if there are no eggs? These are older plecos I got from someone who had them for a while too.