I keep seeing my pleco sitting on the glass right next to my airstone. I know they like currents but do I need to worry about the bubble entering his gills or anything like that? I forget what species he is I got it at the LFS and will post a picture when I get around to it. He isn't supposed to get very big and is brownish with black spots. I thought he was a rubbernose, pretty sure it isn't a bristlenose.