Hi Karen,
Glad to see your tank(s) are flourishing. I'm assuming you stillhave the other 55 gallon as well as the 75 gallon. I'm glad I could be of help at that time of need, when you had those problems -- at least I hope I was able to finally help. I remember the long ordeal you went through in trying to get all three tanks stable. That all your tank parameters have now been "normal" and doing well now for a good while, it might appear as though my recommendations may have been helpful after all, which I very pleased for you if that's the case.
Without a photo, this growth is hard to diagnose, but as Dawn mentions, I too believe this is a lesion caused by a virus -- which I was about to reply to you earlier this evening about, soon after seeing your posts. Had some local club business to take care of first though, and I knew you couldn't do very much about this condition anyway, as I've never seen it treatable.
It is contagious, but I've never seen it "highly contagious." Still, there is no benefit of keeping the affected fish with other Angels at this point as inevitably another Angel mat contract it -- even if it's three months down the road. The longer you keep such an infected fish with others, the more likely that another Angel with get this same virus.
Unlike Dawn's observations though, I've never seen this condition go away and then come back at another time, and I've seen a number of these cases. Whenever I've seen the manifestation of this virus, it has always remained with the fish. I know of nothing that will treat it. Unfortunately, many viruses are just not cureable, even including the common cold that we develop. There's the chance that, just like the common cold, that this virus may run its course and have the symptom disappear with the help of the fish's immune system, as I suspect is what happened with the fish Dawn saw with the symptoms subsiding as these less threatening diseases may act in various ways with different fish.
If it's one of a pair, and you wish to continue breeding them, remove them both from the tank so that others aren't exposed to it for any longer than they need to. The mate may or may not develop this same virus, but the only other alternative is to just remove the affected fish which precludes any further breeding. Any cases I've seen with it eventually ends with the fish's demise after a long period of time; the fish's general health just seems to be gradually pulled down after a while.
Since you brought up the possibility of this being a deformity from inbreeding, I can tell you it's not, but I've seen unscrupulous breeders try to sell these fish as a new strain of thick-lipped Angelfish (the entire lip most often becomes affected, unlike your's just having a localized lesion). They will eat normally for a good while, but will usually stop feeding gradually as this virus pulls them down after some time.
Ray
--- In tropicalfishclub@yahoogroups.com, "Karen Martin" <DanemarkDanes@...> wrote:
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> I have a well established tank where everyone seems to be flourishing well.
> Tank parameters have all been normal and doing well for quite a while now
> thanks to Ray's help offline. Anyway, I have an angel that was in my tank
> for months, maybe 6 with no issues, bought at a LFS. The last couple months
> he/she has had this growth like protuberance on the upper lip. Doesn't
> affect how she he eats and seems normal in every other way. What causes this
> to happen and can you do anything about it. Doesn't seem to both him/her at
> all. I've seen others with this before but for some reason I just thought
> they were deformed or something from inbreeding. But this one was not this
> way until recently and I had it over 6 months when it happened.
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> Thanks for the advice!
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> Karen
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