Weird growth on sailfin’s fin? Help ID the problem?

[brandon2950]

Hi everyone, about a week ago we noticed a growth on our sailfin tang, and it has gotten bigger, and darker in color. If someone could ID this growth and inform me how to treat it, it would be appreciated. Thanks!

 

[vetteguy53081]

Hi everyone, about a week ago we noticed a growth on our sailfin tang, and it has gotten bigger, and darker in color. If someone could ID this growth and inform me how to treat it, it would be appreciated. Thanks!

This is bacterial and likely related to either post injury or a water quality issue . Treatment will be in quarantine using seachem kanaplex and monitor water quality with a reliable test kit and increase oxygen during treatment

 

[Spare time]

@Jay Hemdal Remember when I showed you the porcupine puffer with a severe case of whatever this is? I don't think we ever figured it out

 

[Jay Hemdal]

I think that is an aggressive case of Lymphocystis. What happens is that the viral cells get into the fish's tissue and cause the skin cells to become giantized. Depending on the type of cells involved, the resulting growth can be different colors and can grow at different rates. That this is on the trailing edges of the fins points to it being Lymphocystis. Fish can fight this off eventually with no treatment, but it may get worse before it gets better, and will take a month or more.

That said, I can see some random white spots on the fish and its fins - those bear watching in case they are ich or some other parasite.

Jay

 

[brandon2950]

I think that is an aggressive case of Lymphocystis. What happens is that the viral cells get into the fish's tissue and cause the skin cells to become giantized. Depending on the type of cells involved, the resulting growth can be different colors and can grow at different rates. That this is on the trailing edges of the fins points to it being Lymphocystis. Fish can fight this off eventually with no treatment, but it may get worse before it gets better, and will take a month or more.

That said, I can see some random white spots on the fish and its fins - those bear watching in case they are ich or some other parasite.

Jay

I’m almost certain you are correct after doing more research! Thank you so much for the help as I am fairly new to the hobby. I will keep my eye on it.

 

[The Ginga Ninja]

This is bacterial and likely related to either post injury or a water quality issue . Treatment will be in quarantine using seachem kanaplex and monitor water quality with a reliable test kit and increase oxygen during treatment

I second that this is likely lymphocystis, and also provide my asurance and experience that this usually just clears up on it's own. So it was with our porcupine puffer, and as you can see his case was worse than that of your fish