Lump on apisto fin

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Gingerlove05
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Re: Lump on apisto fin

Post by Gingerlove05 » Sun Nov 24, 2019 15:00 pm

Vale! wrote:
Sun Nov 24, 2019 14:08 pm
Could the culprit be one of the viruses that are responsible for lymphocystis?
Possibly Vale! I dont know of any way (within my means at least) of being able to tell. Is there any way of telling/getting rid of it that you know of?

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Re: Lump on apisto fin

Post by Vale! » Sun Nov 24, 2019 16:07 pm

I arrived at my suggestion via a process of elimination, and a memory that's stuck in what's left of my brain because I remembered being unable to write the word without having to look it up to verify the spelling - I always want to write 'lymphocystitis', for some reason!

It doesn't look like any parasite that I'm aware of. It doesn't look like a bit of detritus that's got lodged in the fin. It doesn't look like a physical injury per se. It doesn't look like a bacterial infection. It could be a tumour but, if I've interpreted you correctly, it's developed rather more suddenly than one might expect a tumour to develop.

So IF all the above can be eliminated, one remaining explanation is a virus (there may be others that I've missed, of course!). When I first saw it I thought: "wart!" - which are caused by viruses, though I don't know whether fish are vulnerable to wart viruses! But I do remember reading that lymphocystis viruses are common in aquariums. As with most pathogens, fishes' anatomies and/or immune responses normally don't allow them to invade. A breach in the cuticle, though, changes that.

The cuticle covers the entire fish, fins an' all, though it's thinner at the gills to facilitate gas exchange. Such breaches may occur through relatively violent events - fighting, nipping etc. - but they can also happen via events which we'd assume to be relatively benign, such as being netted or a bash against a piece of decor.

As to treatment, I'm afraid I'm at a bit of a loss to know what to suggest. I guess I/we could do some reading-up. Is it better just to leave it and trust that the fish will overcome it eventually (like a human cold virus, maybe) ; or is it better to attempt to excise it and risk unnecessary trauma to the fish and/or risk spreading the virus (if that's what it is) further? I don't know - it's at times like this when I wish we had a vet handy (Fishgeek, where are you?!).

Random thoughts : quarantining is unlikely to do any good because the virus will be prevalent in the tank rather than be confined to the one animal ; provided conditions such as water quality, temperature and diet are optimal (I'm sure they must be, in your case) then it's unlikely that other fish will be affected unless their cuticles are breached somehow.

I'll do some digging when I can and let you know if I come up with anything potentially useful. Meantime, the above represents my best guess.
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Gingerlove05 (Sun Nov 24, 2019 16:40 pm)

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Re: Lump on apisto fin

Post by Gingerlove05 » Sun Nov 24, 2019 17:03 pm

I’ve had a bit of a read up of lymphocystis (i know what you mean about the spelling, i say it how you spell it in my head ;)). It does appear it is similar to a wart in the way the virus works, and apparently will disappear in time with good maintenance, diet etc it also tends to occur on the extremities (like fins) more often because they are further away from the blood vessels, antibodies and immune system.
There wouldn’t be much point in QT-ing him, its only him and Sarah (our BN) in there.
I’ll keep digging to see what else I can find.

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Re: Lump on apisto fin

Post by Vale! » Sun Nov 24, 2019 19:56 pm

None of the digging that I've done since last posting has suggested anything other than probable lymphocystis.

The virus is one of the Iridoviruses and seems to be referred-to as LCDV (LimphoCystis Disease Virus) or as just LCD. Disease described in 1874, virus discovered 1962. Now spread worlwide and infecting a wide range of freshwater and marine fish, including cichlids.

Nodules are typically single cells that have grown to enormous proportions - up to a million times the volume of a normal cell. Disease is not normally fatal (unless the infection is particularly heavy) and is self-limiting ; the nodules clear up of their own accord after a few weeks. No easily-accessible treatment that will speed up the process other than optimal environment.


[On a facetious note: while digging I came across the mention of a fish I'd not heard of before called the 'White Crappie'. I thought that was something to do with dogs. And pavements.]
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Re: Lump on apisto fin

Post by Ric » Sun Dec 01, 2019 10:15 am

Dare I ask how Jayne is doing?
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Re: Lump on apisto fin

Post by Annie » Sun Dec 01, 2019 10:57 am

Yes, hope he’s doing OK 🤞🏻
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Gingerlove05 (Sun Dec 01, 2019 12:33 pm)

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Re: Lump on apisto fin

Post by Gingerlove05 » Sun Dec 01, 2019 12:36 pm

He’s fine, there’s no change in his demeanour or attitude, still eats like he never gets fed (especially when its frozen food). We’ve just been keeping a close eye on it atm, and i’m doing a couple of extra smaller water changes to keep the tank clean.
Thanks for asking both :)
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Re: Lump on apisto fin

Post by Ruth » Sun Dec 01, 2019 15:51 pm

Just read this all!

1 Regards to Jayne
2 I’ve no ideas or advice for you
3 White Crappie ( dog poo). Lol!!!
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Gingerlove05 (Sun Dec 01, 2019 17:19 pm) • Ric (Mon Dec 02, 2019 7:18 am)

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