I have a Silver Arowana about 12" long and just last night he started biting my fake plants in the tank. I did add 3 new little plants about 6-8" tall. One of those is the first one I saw him bite. But then he tried to bite the fake plants that have been in there for over a year that are about 15" tall and I have never ever seen him do that before. What does this mean is it really trying to eat them, or does he just not like them, or do they do this being territorial? Has anyone had an Arowana do this before?Any ideas welcome. Thanks. 
