[sweet chariot]

My goldfish started getting white spots on his tail about a month ago but I didn't do anything because they usually go away on their own. This time they are spreading. No behavioral changes or anything, thankfully, but the spots on her tail aren't getting any better. They're about 1mm in diameter, white and form in a line on the edge of the tail. Today one of the lumps appeared in the middle of the tail. It's definitely not ich because this fish had ich before and it looked totally different. I'm pretty sure it's not fungus either, since the spots aren't fuzzy but smooth looking. I'm rather attached to this fish as I've had it for about 7 years now. What do you think it could be?

 

[kuro]

those might be those male goldfish tublercles spot thing that appear on the edge of their tail and fin when they ready to breed or mature. Does he have some on his gill plate too?
http://www.google.com/imgres?q=male...&tbnw=154&start=0&ndsp=16&ved=1t:429,r:11,s:0

 

[sweet chariot]

No, this fish is definitely a female (seen ovipositor and reabsorbed eggs). They are only on the the tail fin and as far as I know breeding tubercles only appear on the gill plates and pectoral fins (in goldfish, anyway).

 

[kuro]

it might be Nodular diseases. None of my ranchu ever had nodular so im no sure if it nodular disease.
Here a link to a topic on goldfish keeper about nodular disease
http://www.goldfishkeepers.com/forum/showthread.php?t=581&highlight=white+spot

 

[sweet chariot]

Oh wow that sounds horrible! So I did some reading on nodular disease and they said that they're like cysts that burst and release the sporozoans, but it's been at least a month since these things showed up and they haven't changed shape or burst. Gosh, I really hope it isn't nodular disease, apparently it's incurable and the spores can never be destroyed and remain in the tank forever

 

[kuro]

that the thing about spores you don't know when they gonna burst they can be in that stage for few days to few decades and you never know if they will come out. As long your fish is happy just keep the water clean, however you should isolate him from your other goldfish just incase. I think i did had one black ranchu that had a nodular disease on his head at first i though that the wen was growing but it look more like a salt or white dot.Sadly he pass away after he got that a year later.

 

[sweet chariot]

So does anyone have suggestions of what this is it definitely nodular disease?

 

[sweet chariot]

Anyone? I really hope I can do something about this fish, or just confirm there's nothing I can do