Are the syno. eupterus known to suck on the slime coats of polypterus like plecos? I had noticed a couple of spots on some of my polys that appeared to be a little lighter over the past couple of days. It looked just like my senegal did when my pleco got ahold of it. I have been keeping an eye on it to see if its getting better or worse, and today I noticed that there were several new spots on the different polys. I pulled the syno cat and placed it in another tank for the time being. Is that the most likely culprit? Tankmates are polys, ropes, and an african knife. Whats the best treatment?