RE: [RML] Neon's disease in rainbowfish?

Brett E. Kemker, Ph.D. (kemker at latech.edu)
Thu, 10 Mar 2005 08:12:37 -0600

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Hello Christophe-

I have seen something similar to this in other species of fish (killifish)
that have been on the receiving end of a lot of aggression from the males.
The body bruises often look "milky". I have also seen milky sections in the
tissue of fish that have just recently been collected in the field. I have
always attributed this to damage received from being collected. An
infection (bacterial?, fungal?) ultimately sets in to finish off the bruised
fish.

Another possible consideration is that this on-the-spot swimming behavior is
often seen in livebearers with dropsy. Have you tried isolating the
afflicted fish and increasing the salt content in the water?

Please keep in mind that this is purely anecdotal and you should if possible
have a necropsy performed on a recently deceased fish.

Good luck,
-Brett

_____

From: Christophe Mailliet [christophe.mailliet at web.de]
Sent: Thursday, March 10, 2005 3:48 AM
To: r_m_l at yahoogroups.com
Subject: Re: [RML] Neon's disease in rainbowfish?

Hello again,

Anyone a suggestion on the topic below?

Thanks,

Christophe

r_m_l at yahoogroups.com schrieb am 08.03.05 10:38:30:

Hello everyone,

I have recently had problems with a mysterious disease that has affected
mainly my Bedotia sp. "Lazana", but also the Bedotia cf. madagascariensis
and now my Melanotaenia catherinae. So far, only females have been affected
- for some odd reason or just by chance, I don't know.

It looks as if the muscles are damaged and take on a milky complexion,
mainly on the back. Basically, you cannot "see through" the fish anymore.
Eventually, the milky parts become larger, and the fish looks like it is
partly paralysed. At the beginning they still feed, but after a couple of
days they stop feeding and eventually die. At the end, they stay in a corner
of the tank and have this strange "undulating", on-the-spot-swimming (a bit
like the movements of a snake) behaviour.

>From pictures, the closest thing resembling this mysterious disease would be
Plistophora, the so-called "Neon's disease". I first thought this might be a
swimming bladder problem, but the fish swim normally, at least at the
beginning of the infection.
I have tried anti-bacterial medication like Nifurpirinol, to no avail, plus
the usual frequent water changes, filter cleaning, etc.

Has anyone on the list had similar experiences? Any suggestions on how I
could deal with this?

Thanks for any advice, and best wishes from icy Berlin.

Christophe

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Hello Christophe-<o:p></o:p>

I have seen something similar to this in
other species of fish (killifish) that have been on the receiving end of a lot
of aggression from the males.  The body bruises often look “milky”.
I have also seen milky sections in the tissue of fish that have just recently
been collected in the field.   I have always attributed this to damage received
from being collected.  An infection (bacterial?, fungal?) ultimately sets in to
finish off the bruised fish.  <o:p></o:p>

<o:p> </o:p>

Another possible consideration is that this
on-the-spot swimming behavior is often seen in livebearers with dropsy. Have
you tried isolating the afflicted fish and increasing the salt content in the
water?<o:p></o:p>

<o:p> </o:p>

Please keep in mind that this is purely
anecdotal and you should if possible have a necropsy performed on a recently
deceased fish.  <o:p></o:p>

<div>

Good luck, 
-Brett <o:p></o:p>

</div>

<o:p> </o:p>

<div>

</div>

From:
Christophe Mailliet [christophe.mailliet at web.de] 
Sent: Thursday, March 10, 2005
3:48 AM 
To: <st1:PersonName w:st="on">r_m_l at yahoogroups.com</st1:PersonName> 
Subject: Re: [RML] Neon's
disease in rainbowfish?<o:p></o:p>

</div>

<o:p> </o:p>

<tt>Hello again,</tt> 
 
<tt>Anyone a suggestion on the topic below? </tt> 
 
<tt>Thanks, </tt> 
 
<tt>Christophe</tt> 
 
<st1:PersonName w:st="on"><tt>r_m_l at yahoogroups.com</tt></st1:PersonName><tt> schrieb am 08.03.05 10:38:30:</tt> 
 
 
<tt>Hello everyone,</tt> 
 
<tt>I have recently had problems with a mysterious
disease that has affected mainly my Bedotia sp. "Lazana", but also
the Bedotia cf. madagascariensis and now my Melanotaenia catherinae. So far,
only females have been affected - for some odd reason or just by chance, I
don't know.</tt> 
 
<tt>It looks as if the muscles are damaged and take on
a milky complexion, mainly on the back. Basically, you cannot "see
through" the fish anymore. Eventually, the milky parts become larger, and
the fish looks like it is partly paralysed. At the beginning they still feed,
but after a couple of days they stop feeding and eventually die. At the end,
they stay in a corner of the tank and have this strange "undulating",
on-the-spot-swimming (a bit like the movements of a snake) behaviour. </tt> 
 
<tt>From pictures, the closest thing resembling this
mysterious disease would be Plistophora, the so-called "Neon's
disease". I first thought this might be a swimming bladder problem, but
the fish swim normally, at least at the beginning of the infection. </tt> 
<tt>I have tried anti-bacterial medication like
Nifurpirinol, to no avail, plus the usual frequent water changes, filter
cleaning, etc.</tt> 
 
<tt>Has anyone on the list had similar experiences?
Any suggestions on how I could deal with this?</tt> 
 
<tt>Thanks for any advice, and best wishes from icy <st1:State
w:st="on"><st1:place w:st="on">Berlin</st1:place></st1:State>.</tt> 
 
<tt>Christophe</tt> 
 
<tt>-- </tt> 
<tt>"You can fool some people sometimes, but you can't fool all the people all the time." Bob Marley, 1973.</tt> 
<tt>______________________________________________________________</tt> 
<tt>Verschicken Sie romantische, coole und witzige
Bilder per SMS!</tt> 
<tt>Jetzt bei WEB.DE FreeMail: <a
href="http://f.web.de/?mc=021193">http://f.web.de/?mc=021193</a></tt> 
 
 
 
 
 
<tt>Yahoo! Groups Links</tt> 
 
 
 
 
 
 
 
 
 
<o:p></o:p>

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