rare Malawi cichlid disease

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Uncle.Ned

Feeder Fish
MFK Member
Oct 15, 2006
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rare Malawi cichlid disease

Please don't panic,
this disease is truly rare.

I call it "Malawi plague"
I forget the real name.

Shows up every 3 years or so...
a nasty flesh-eating bacteria.
Allegedly the bacteria is endemic to Lake Malawi,
but virtually never shows up on wild fish.
I know of at least one Florida fish farm that has had it,
and frankly I suspect some Asian fish farms have it.

Only affects Malawi cichlids,
maybe sometimes Tanganyikans.
Never affects South or Central American Cichlids or non-cichlids.
But it is highly contagious, water born, so a wet net or anything can transfer it,
including another cichlid or any fish going from tank to tank.

It is so scary, I always warn the staff
and we all wash our hands with the hottest water possible and soap
after working with water suspected of containing the rare bacteria.
I also throw away hoses, nets and other equipment used in working with a suspect tank.
Fortunately I haven't seen it here in four years.
Got it from a Florida fish farm I won't name because they have since eradicated the problem (hopefully).
The disease was going around New England PetCos about 3 years ago.

Starts out looking like ordinary mouth-fungus
(which would not be too unusual for Malawis because they mouth fight.)
Next the fungus shows up on the dorsal and back.
Next the fungus attacks the center of the body,
this (and the mouth/face) damages is what causes death.
In as little as 3 days!

The rapid spread over the body,
and the almost totally predictable effected body areas in succession,
is what is different with Malawi Plague from regular "fin & tail rot".
Fin & Tail Rot appears anywhere on the body at random,
and progresses slowly (7 to 14 days usually.)
Regular Fin & Tail Rot is normally treatable with ordinary Tetracycline, clean water and good food.

This disease is so nasty it will kill every Malawi cichlid in your tank.
No amount of water changes
(the normal solution with Malawi or any fish tank with problems)
Maracyn, Clout, Quick Cure, Metronidazole, salt, or heat (my usual favorites)
will help at all.

The good news is
Oxylinic Acid
(an unusual antibacterial powder)
destroys the Malawi Plague bacteria in as little as one dose.
I usually give it 3 doses, just to be sure.

Usually when using antibiotics,
I leave the filter foams, but remove the carbon.
In the case of Oxylinic Acid,
I find that removing even the sponges is more effective,
because the powder is almost non-dissolving
and would be caught in the filter foams.
You are virtually "dusting" the fish.

We always keep Oxylinic Acid in stock.
It happens to be good on other flesh eating bacterias,
such as "Neon Tetra disease".

So
nothing to panic about...
just something to be aware of.
 
Wow - this is very informative. I've never kept these fish (except Tilapia, ) and this is new to me. Very interesting stuff. Thanks for sharing.
 
I'm a skeptic so I'm not sure I actually believe the "rare Malawi flesh-eating disease".
The info provided is sketchy at best. You provide no scientific proof of it's existence.
IMO it sounds more like a virulent strain of Flex or comlumnaris (Flexibacter columnaris).
 
Does this affect Tilapias?
 
Strange don't you think?
Cause if it affected all Malawi fish would it not affect Malawian Oreochromines? And if it affected Malawian Oreochromines why not non-Malawian Oreochromines or Oreochromis species that live in the rivers around Malawi?
 
Thats scary!
 
I too am having a hard time following the type of disease this is. Fungus growth and bacteria are mutaully exclusive terms. Either the disease is caused by a bacteria or a fungus. If oxylinic acid works it is probably a bacteria. Where does one get this oxylinic acid? I've used it before but I always got it from a retailer that was selling me fish and he did it to help cure a sick fish he sold me.
 
The reason I asked about Tilapias is because they seem to be the sole survivors in any kind of disease attack in an aquarium I've ever owned - wondering if they are resistant to this disease?
 
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