+1 Mike
From what I've seen with Sebaes at the store,They'd probably do better if the tank was at least a year and half old.
Sebaes don't handle any kind of swings in the water quality.
I think Capt is the only one who has kept one long term.Probably one of the hardest to keep.The last time I tried,it just dwindled away over a period of months.