discus in need of some help

[shayesmommy]

my smallest discus.
hasnt grown. but he eats well.
he seems thin but was always heathly.
hes now laying in the corner.. barely breathing. very show shallow breaths..
hes on his side. color is same just a little darker.
and there seems to be scratch or bite marks..
fighting with him has never really been an issue.
so im moving him in a 10g..
im just wondering if i should treat him or what i should do..
oh and he started not coming up for food.
his poops are normal.

[shayesmommy]

nevermind he passed away this afternoon.

[Bill T]

Sorry to hear about your fish dying.
One dead fish is a disapointment - two dead fish is a worry. So keep an eye on the rest of them. If they develop symptoms, early intervention is called for. Would your lfs do a post mortem on the recently departed?