One of my Bristlenose Pleco has a very strange habit of sleeping flat on her back! She is normally in her favourite log, often suckered to the top, sort of hanging upside down. On a few occasions now I have found her in the same position, but not attached, laying on her back on the bottom, mouth moving like normal.
The first time I saw her like this it freaked me out! But when another fish goes near her she flips over a scoots off!
Anyone else seen this behaviour in their Plecs? My others don't do it & she seems fine. Very odd