I'm not sure if this is the right place, but I have a pleco in with my 1.5" RES.
This morning while I was making sure Nemo ate, I saw my pleco latch onto his stomach. Nemo didn't seem bothered by it, but it freaked me out.
Do I need to re-home my pleco? Would upgrading to the 55 gallon (Four foot long, 2 feet tall, 1.5 feet wide) solve this problem?
Can my pleco really do serious harm to my RES or was he just "cleaning" him?
Sorry if this is posted in the wrong place.
Edit:: For now, I moved my pleco into a separate tank until I find some answers.

