WHAT IS ON MY KOI!?

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WolfFisho1

Feeder Fish
MFK Member
Feb 5, 2006
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Suburbs North of Philly
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This is one of my nicest fish in my pond! it is the biggest koi at abot 14in! the most valuable especially it being a butterfly! so i would like to kno what is on him! it has been a few year with this stuff on him! gets better and worse! sometimes hanging off of the dorsal fin. But right now it is doign better

i will try to get some pictures! but it is also one of the shyest fish besides the channel cat!

but he is black and orange and their is this raised white film over some parts of him! you can still see through the film but it is almost totally opaque!

so based on that description what can you tell me? Should i treat it with a fungus med or parasite? I think fungus! anything else i can do to treat it?

keep in mind this pond is almost 2000 gallons so it is limited!
 
Some of my uncles koi have something similar to what you have discribed. It looks like a fungus on there fins and comes and goes with differences in amounts.

We have treated it numerous times with different medications and it will go away, but still comes back. Only a few fish have this, and it doesn't seem to affect any of the other fish.

We have litterally scraped the stuff off and looked at it under a microscope and it basically looks like watery tissue, and nothing is moveing in any of the films we have checked.

Not sure if we are talking about the same thing or not, but the fish that my uncle has that have this stuff have had it on and off for the last 13 years without any ill affects with none of the other fish ever getting it.

I'm not to sure what it is. I would just treat it with some anti fungal medication just to be safe, but I wouldn't worry about it too much.
 
I wouldn't worry. One of the fish that has it is a big female just shy of 4' so it doesn't affect their growth at all.

I think it is just something certain fish get by being outside exposed to the elements.
 
Try some pond grade pimafix, see if that helps.
 
It might be carp pox. It comes every year when spring starts then as it gets warmer goes away. Looks kind of like candle wax. It's not contagious (genetically passed) and there's no cure unless you want to raise the temperature to make the pox go away temporarily.

FYI butterfly koi are worth less than standard koi...
 
Yep Isis, I bet thats what it is. My one Koi used to get it every year too. Somebody told me it was called fish pox or something.
 
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