well, i came home and the horns looked like they had a milky coating on them so i rubbed my finger on them and whatever the taxedermist sprayed on the horns was rubbing off.i pulled the skull out as soon as i noticed this and did a 80% water change. the fish are acting fine and still look great so i think i got it out just in time to not do any harm.i strongly suggest to anybody else(and myself from now on!) that if u dont know something will be safe in ur aquarium, or "think" it will be ok, do not put it in!