Here is the skinny
It has two possibilitys Koi herpes virus (KHV) / Carp Pox on that
tail.....as for the whitish film on scales, it could be a thicker
slime coat or it could be a poor section of scales but odds are its
due to Koi herpes virus (KHV) White spots on scales as such can be a
positive visual indicator for Koi Pox ....The fish is definately
stressed as there is lots of red streaks in the tail which is a good
indicator of stress or on set of a bacterial / viral infection. It
would be good to have a complete set of water parameters . Koi POx or
CArp POx can make fleshy warty growths on a fish as well but its not a
fatal disease. If it is Koi Herpes (KHV) its required to be reported
to the Dept of agriculture due to its seriousness. ONly one way to
really tell and that is to have it checked and have a scope done and
look for the herpes or pox virus.....
Check out Universtiy of Florida in regards toKoi herpes virus (KHV)
Info.
KHV is contagious so a QT is best. Mortaility is high with KHV....
Certainly not smart to arbitraily toss in a farm pond as another
stated as KHV is highly contagaious to other fish in that species be
it fat head minnows or goldfish.
On 13 Feb 2007 18:17:37 -0800, "scs0" wrote:
I have a koi with an unusual growth on its tail fin that looks like a
praying mantis egg sac. The fish also has hazy white areas on its
body. On its back there is a large opaque oval and I noticed some
smaller areas on its head. I first noticed issues with this fish in
the spring of 2005 and put it into a holding container with another
fish for several weeks as I dosed it with anti-bacterial and anti-
fungal medicines. It didn't seem to get better but upon closer look
it didn't seem like these white areas were disease, so I blew them off
as possibly an ugly batch of scales.
Now it's early 2007 and those white areas still exist and are possibly
larger but not substantially. The growth on the tail is something I
just noticed a few weeks ago and definitely is not healthy. I think
another of those growths exists on the underside of the fish near the
tail fin, but as you can imagine it's difficult to net and examine
this fish close up. The end of the fin itself seems to be diseased,
yet not in a way that would cause tearing.
If I had to take a guess I'd say this fish is at least 18" long and is
at least 2.5 years old and the other fish in the pond seem healthy.
Here are links to some photos:
The odd growth ==
http://s1974.home.comcast.net/sick_koi.JPG
The white region ==
http://s1974.home.comcast.net/sick_koi2.JPG
I have a feeling this isn't a bacterial infection, fungal disease, or
parasite because those issues should have spread to the other fish in
the 2 years that I've noticed odd health issues with this one. The
only other thing I can think of would be some sort of fish cancer, but
I'm not a vet so I have no clue.
Any ideas on what's going on? If so, what do I do about it?
-------
I forgot more about ponds and koi than I'll ever know!