White Fuzz On Goldfish Fin

I have a 7-year-old Shubunkin fish who was housed in a 20 gallon long tank. I recently upgraded to a 40 gallon long tank. Before I transferred her, I noticed white fuzzy spots on her fins and treated her with Furan-2 in the 20 gallon. She has had the white fuzz for several months (predominantly on the tail fin) despite bi-weekly water changes.

The white fuzzy spots seemed to disappear after the treatment and I moved her over to the cycled 40 gallon tank yesterday.

This morning, I am noticing 3 white fuzzy spots on the edge of her Pelvic fins when the majority of the white fuzzy spots were on her tail fin prior to the treatment. The spots on her tail fin are gone.

She has long, fancy fins so they occasionally rip or tear (probably due to getting caught in the filter) so I attributed the white fuzz fungus to the tears/rips on the fins.

Not sure what to do so any help would be greatly appreciated!

 

Could you post a pic and list water parameters? That would narrow down the possibilities a bit

 

Could you post a pic and list water parameters? That would narrow down the possibilities a bit

Thanks for your reply!

Fortunately, I was not able to see any white fuzzy dots on her this morning. I tested the water and the results were:

Ammonia- 0 ppm
Nitrite- 0 ppm
Nitrate- 5.0 ppm

 

Well, it’s good that they seem to be gone! If they ever come back feel free to post a picture, I’ll take a look and see if I can identify it!

 

Well, it’s good that they seem to be gone! If they ever come back feel free to post a picture, I’ll take a look and see if I can identify it!

Will do! Thank you so much!

 

Well, it’s good that they seem to be gone! If they ever come back feel free to post a picture, I’ll take a look and see if I can identify it!

The dreaded white fuzz is back! I tried my best to get a good picture but they're not as clear as I would have liked them to be. Please let me know if you need another picture!

 

Hmm. I’m really not sure what that is. Do they ever get bigger, or do they stay pretty small? Usually fungus spreads and grows really quickly. And does he act normally when he gets them, or does he display any symptoms of being sick and uncomfortable?

 

Hmm. I’m really not sure what that is. Do they ever get bigger, or do they stay pretty small? Usually fungus spreads and grows really quickly. And does he act normally when he gets them, or does he display any symptoms of being sick and uncomfortable?

They stay about that size, never much bigger than the largest one pictured. She (is it a he? I always thought it was a she!) never acts lethargic or unusual when she gets them. She eats and behaves typically and they do not seem to bother her.

 

I don’t know if it’s a boy or a girl, for some reason I just always refer to animals as “he” . If it’s not bothering her and they never get bigger, I’d just keep an eye on them and make sure nothing changes.

 

I don’t know if it’s a boy or a girl, for some reason I just always refer to animals as “he” . If it’s not bothering her and they never get bigger, I’d just keep an eye on them and make sure nothing changes.

Perfect, will do! Thanks for all your help! Hopefully they disappear with clean water and weekly water changes.

I believed it to be "fungus (saprolegnia)" after I read this article on Koi fish diseases.

 

If it were a fungus, I would think your fish would be scratching or generally acting uncomfortable. I mean, wouldn’t you be a little itchy if you had a fungus growing on you?