synapse989;1198923; said:it never touched LFS water.. it came in next day and sat in the bag til I picked it up. ..basically was only there at the store for 30 minutes.. ...but even so, both the LFS and I keep water roughly neutral.. sometimes slightly acidic.
this fish was swimming the top water most of the time, I only saw it go low in the tank a couple times. down and back up again...*shrug*
that was your biggest mistake
you should have waited at least acouple weeks before you bought the fish.
if a lfs recieves a new shipment of arowana, WAIT.....this is the bigest mistake people make. Disease may flare up under the stress of transportion. Give the fish afew weeks to settle in, ask you lfs if they can hold a cetain fish you want, you may have to give them a deposit fee to hold it, but other may do it for free if you know the right people all depend on the individual store. Even if you pay the small deposit fee, it will be alot better than having to pay full price and have it die in your tank afew days later.
it is pointless to try and figure out what killed it.
read this:
http://www.monsterfishkeepers.com/forums/showthread.php?t=94355
now go try again