For some reason the forum just sent me the email notification today that I had a reply to my post. Usually it's instant! Unfortunately, the Arowana died on Monday the 14th. No signs of any illness, temp was at 78, tank has been cycled for months and there was 0 ammonia and nitrites in there (I test with the API master kit.) I never turn on the lights on my quarantine so the fish can be a little more relaxed and after it started laying on the bottom, I put a towel over the tank so movement wouldn't bother it. The Leopard Ctenopoma which was in the same tank with it at the LFS and in my quarantine tank is still doing great.