Question
Gold Fish 040
I have a 4 year old 16 x 21 foot pond with gold fish and Koi. Most have been in the pond since the beginning. Last spring I noticed a growth on several goldfish that no one I have contacted can identify. I was expecting die off this spring so I could send a fish for a diagnosis hoping to save the rest. Thus far all fish are looking well but the disease is spreading to each fish except the koi. I am hoping to be able and include a picture here. It will be the fish on the left of the picture. The growth appears as a whitish-yellow oblong boil on one of my fish. It does not move or disappear, only becoming larger and on one fish is about an inch long so far this year. Applied salt and antibiotics last summer-fall with no change. Hoping for help. Thank you.
AnswerHello Rochelle,
Your fish has either an Anchor Worm or a Fluke on its back. The pustule forms around them to get it to pop out, a body's self-defense mechanism, however it doesn't work, of course.
It could also be a virus, because more than one fish have it. It is obviously contagious. The koi may have it, but less visible than their counterpart goldfishes are.
There are tubercules which grow on male goldfish. If you are not able to identify these and to separate them from the other growths by looking, then it would be a good idea to treat the entire pond. it can be expensive in the size pond you have, however it is necessary.
Go to the store and buy Prazi Pro. You might need a whole load of it to treat your pond. Perhaps I'd buy a pint or quart...and I'd measure it out appropriately.
If you can't get a Prazquantel product, then please get http://www.junglepond.com/details.asp?item=PC111-20 Jungle's pond antiparasitic or some type of Pond quantity parasite treatment. Don't go with melafix or pimafix. Both are very weak, holistic medications and neither one does anything.
You have parasites. They are common in ponds.
It's worth treating them. They will possibly live long lives with these things in the pond, but it can also attack the Koi (who might have a more resistent scale structure) and will begin killing them, down the road.
I hope this is helpful. I feel so sad for the fish. It looks very painful, but the truth is, he probably doesn't notice it.
Happy fish-keeping.
Renee
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