white crystal like cotton growth on fin

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Joefosho

Gambusia
MFK Member
Jan 12, 2017
17
21
18
44
Bakersfield
My gephyrum has this white ball looking clusters on its dorsal fin and appears to be getting the start of another on its back fin also. When looking closely at the clusters they seem to have little spurs or root like things coming out of them. They almost have a crystalish look to them. I have no idea what this is or how to treat. I've been using a general anti fungal medication for about three days now and it seems to be getting worse. Any help would be greatly appreciated. I would really love to keep this fish alive and healthy!

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Hey Joe,
That's a pretty fish. I do not have experience with that type of fish, so keep that in mind. That tail looks like it could be fin rot. That's what it looks like when my koi have had it. It would seem that if that is the case, you may have the same thing on the dorsal with a secondary fungal infection. But again, I'm not an expert. What medicine are you using? You may need to step it up along with water changes
 
Before using any medication list your water parameters to me it looks bacterial but not sure.

kno4te kno4te
duanes duanes
Charney Charney
 
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Before using any medication list your water parameters to me it looks bacterial but not sure.

kno4te kno4te
duanes duanes
Charney Charney
I agree. Fin rot is usually caused by deteriorating or generally overall poor water conditions. To appropriately assess that you need to post your water parameters.
 
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Water parameters? Tankmates? I would suggest to qt the fish if able. 1 tsp per gallon of salt.

Does look like some fin rot. A little triple sulfa or tetracycline will help.

Any of these meds will kill ur BB so qt tank would do well and can manage ur water easily.
 
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I agree with Tom that it may be bacterial.
If it is, heat can often make bacterial infections more virulent.
A generric term for the infection might be Saddleback disease.
General bacterial/fungal treatment may be best, unless you know someone who could do a plate to see if it is gram neg, or gram positive., and treat appropriately
I have kept gephyrum/ornatum and found when temps rise in late summer they tend to become susceptible to these infections.
They come come from rivers west of the Andes that have average temps in the mid 70sF, due to the proximity of the runoff from mountains,
I was in Colombia a few months back, and was surprised how cool the Magdalena river water fullsizeoutput_2e5.jpegwas even on the coast .
 
My parameters are 7.4 ph, ammonia 0, nitrite 0, nitrate 7.5. I do 50% water changes 2-3 times per week religiously. More times than not 3 times per week. Temperature is at 78 degrees. I've done some research and talked to some people on a fish disease group. I already had suspected that it might be lymphocystis. I did not post the disease as that and this was the same conclusion that the people i talked to came up with. I first thought it was a fungal disease and quarantined immediately. I treated with fungus clear by jungle. The growths got worse by the day and the end of the treatment. They began looking like clumpy little balls of cauliflower. The research I did indicates it is lymphocystis. Lymphocystis is a viral disease for which there is no cure. I learned that the best treatment is pristine water, little to no stress at all, high quality vitamin rich foods, stable conditions and lots of water changes. I also learned the fish must combat this viral infection on its own and these conditions will aid in the fish having the healthiest immune system possible. Some fish will fight this disease off and never show signs of having it again. Others may continue to have outbreaks through the rest of their lives. I do not consider myself an expert in fish disease by any means at all. This is just my own diagnosis and treatment aided by research and others.
 
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