Flame Angel not doing well. Please Help

[hagfish]

I have a flame angel that appears to be on the verge of dying. I think it's probably too late to do anything, but thought I'd ask on here anyway. His body is limp and almost seems paralyzed. He can swim a little, but is mostly being blown around by the current (he can float a little bit). Last night he appeared fine to me and he ate well. So this is quite a surprise. Please let me know if you have any suggestions on what I can do. I'm also curious what the problem could even be. Swim bladder problem is all I can think of.

 

[hagfish]

For informational purposes, I've had the fish for maybe 3 weeks. It's in an 80 gallon tank with no predators that I am aware of. There is a purple psuedochromis who has attacked fish in the past, but they've gotten along fine so far and I see no evidence of attack on the angel. It's previous owner says it's at least 8 years old based on how long he had it. I'd like to think it might have been old enough to just be dying of old age, but I kind of doubt it.
Chemicals are fine, temp is a little low today (76), plug for thermometer isn't working well and it keeps slipping out.

 

[beth]

You're right, when a fish has deteriorated to the point that you describe, there's not much hope.
Did he suddenly develop problem when entering your tank? A fish that was used to a previous tank may just be in shock. Its a shame that an 8 yr old fish may pass.

 

[hagfish]

He seemed fine for about 3 weeks up until last night. His color was occasionally not always vibrant though.

 

[beth]

It may be some internal infection resulting from the transfer. Not much you can do unless you have a QT to put him in.