First I just want to say hi as this is my first post here.I have a 7 inch silver arowana.I have had him about a month and he has been great but over the last two days he has started acting strange.At first he starting darting around the tank and has lost his appetite.When I came home today his eyes had a white film over the center and he has white stuff on his fins.He seems to have his mouth open a little as well.I hope someone can tell me what this is so I can help him.Thanks