Ok, so I have an Amazon type setup, and everything has been fine with my existing fish and one loner corycat (trilineatus). I FINALLY found some guys of his species so I put them in along with a new rubber mouthed pleco and a Bolivian Ram. They seemed to have been doing fine for a few weeks but recently I noticed my corcat is missing all of his barbels!! The two littler cories I added with him are fine (intact barbels and fins) and no other fish seem to be "damaged". I also noticed a pretty ragged dorsal fin... Any ideas on what is going on? Could my pleco or ram or the new corys possibly be the culprits? I have never seen any aggresion between any of the fish in my tank... Your help is appreciated.