Ok, so I have Discus, flowerhorn, severums, Green terror and Green texas all in my 180g tank.......you would think this is a recipe for disaster...but everyone gets along great.....Except my Clown loaches and namely my cobalt blue discus.....they are constantly harrassing him and look to be sucking his slime off or something....they kinda look like cleaner wrasses on a shark....only my discus doesnt like it.... The loaches are very well fed....so why do they do this?? I got rid of a redtail black shark and pleco for the same thing...but really dont wanna get rid of my "3 Amigos" Anybody else have this problem?