It's a Bristlenose Pleco and the red skin has gone away now he/she is normal color but i'm not sure is the red patch on her/his belly is gone.BerryAttack said:could be ammonia poisoning, get your water checked and do a large water change.
did you cycle your tank? if so what kind and for how long?
what are the stats?
what other fish are in there?
and what is a BN? sorry not familiar with short form