sorry for the loss of your armatus..... Dont give up, just get another, they are cheap enough
they are worth it!
being comfortable is a HUGE key!! i agree!! HUGE key!!
big rays are dangerous combo..
but i believe smelt is not a health choice.. mine has grown and seems very healthy. and eats tilapia FILLET only.. i did give him a few shad from the lake a while back and it was pretty messy, so i will stick with the fillets.
this is the best luck i have had with one yet... he is getting big, I'd say about 24" now.
I think John was the one who gave advise about not having the tank so full where they can hit the glass during feeding or during gulping air, or when something spooks them.