I didnt know that, its interesting. the guy at lfs said that you want the toughest scaliest fish because they would try to go for the plecos bellyShould be fine,as exodons prefer to attack scaled fishes,u might be able to get some pictus too as they have no scales
Depends on the plecoPleco has a thick plate for protection. I think it should be O.K.
They may heavily pick on each other in smaller schools. Make sure there is hiding spacebecause I am planning on getting about 6 or 8