Single white spot on Yellow Tang Fin need help identifying

[MoH]

Hello,

I have just noticed a single white spot on my yellow tangs left fin. I do not see any other spots on the tang. It is more noticeable in the blue lights vs the whites but I have added pictures of the fish in both. The spot is about the size of a grain of salt. I have had this fish for about 2 years since it was a very small little baby tang. It’s tank mates are 2 clowns that have been in there with him since his addition. Also there is a cleaner shrimp that has been there for about 1.5 years. The last 2 tank mates are newer additions a diamond goby and urchin that I have had for about 4-5 months. I add corals to the tank regularly but all get dipped and sit in qt tank for at least a month most qt for around 2 months or longer. All corals get dipped again when moving to the display. I am very careful with what goes into the display.

Recently changes to tank-
2 weeks ago I re scaped the tank
Added an algae scrubber about a month ago
Started using carbon 30-45 days ago
Tank levels are ideal right now have not been the case over the years but finally dialed in
Lighting schedule changed recently to higher intensity

Rodi water only
Low nitrates
Low phosphates


Yellow tang has always been an aggressive eater and still is. He picks around at glass and rocks all day long. Noticed no change in this.


Need help identifying and coming up with an action plan on how to treat if this is something that needs treatment. My yellow tang is my first ever tang. I have a purple tang in a different display but this is a real pet of mine and our family loves this fish. Please assist me in identifying all the potential options and if this is bad news or not. Thanks to everyone who can help.

 

[MoH]

Hello,

I have just noticed a single white spot on my yellow tangs left fin. I do not see any other spots on the tang. It is more noticeable in the blue lights vs the whites but I have added pictures of the fish in both. The spot is about the size of a grain of salt. I have had this fish for about 2 years since it was a very small little baby tang. It’s tank mates are 2 clowns that have been in there with him since his addition. Also there is a cleaner shrimp that has been there for about 1.5 years. The last 2 tank mates are newer additions a diamond goby and urchin that I have had for about 4-5 months. I add corals to the tank regularly but all get dipped and sit in qt tank for at least a month most qt for around 2 months or longer. All corals get dipped again when moving to the display. I am very careful with what goes into the display.

Recently changes to tank-
2 weeks ago I re scaped the tank
Added an algae scrubber about a month ago
Started using carbon 30-45 days ago
Tank levels are ideal right now have not been the case over the years but finally dialed in
Lighting schedule changed recently to higher intensity

Rodi water only
Low nitrates
Low phosphates


Yellow tang has always been an aggressive eater and still is. He picks around at glass and rocks all day long. Noticed no change in this.


Need help identifying and coming up with an action plan on how to treat if this is something that needs treatment. My yellow tang is my first ever tang. I have a purple tang in a different display but this is a real pet of mine and our family loves this fish. Please assist me in identifying all the potential options and if this is bad news or not. Thanks to everyone who can help.

 

[Dbichler]

Most likely lymphocystis. Feed more and higher quality food goes away on its own.

 

[Big G]

Lymphocystis

Lymphocystis What You Need To Know: * This is a virus that many fish carry for life. The white nodules (cauliflower-like growths) can grow both externally and internally; so symptoms are not always visible. * There is no known cure for Lympho. However, feeding vitamin-enriched foods and...

www.reef2reef.com

Presentation of lympho indicates something is off with the fish's immune system. Adding Beta Glucan to its food can help.

Beta-glucan as an Immune Stimulant in Marine Aquaria

By Christine Williams Inevitably as reefkeepers we do things that stress our fish and invertebrates: bringing new animals in, moving them from tank to tank,

reefs.com

 

[MoH]

So today the white spot is completely gone. Any possible way to find out that’s exactly what it was? Can the spots occur for only a day?

Lymphocystis

Lymphocystis What You Need To Know: * This is a virus that many fish carry for life. The white nodules (cauliflower-like growths) can grow both externally and internally; so symptoms are not always visible. * There is no known cure for Lympho. However, feeding vitamin-enriched foods and...

www.reef2reef.com

Presentation of lympho indicates something is off with the fish's immune system. Adding Beta Glucan to its food can help.

Beta-glucan as an Immune Stimulant in Marine Aquaria

By Christine Williams Inevitably as reefkeepers we do things that stress our fish and invertebrates: bringing new animals in, moving them from tank to tank,

reefs.com

 

[MoH]

Thanks for the reply. Somehow the spot is now gone. Is that normal for Lymphocystis? Also any food recommendations?

Most likely lymphocystis. Feed more and higher quality food goes away on its own.

 

[Big G]

So today the white spot is completely gone. Any possible way to find out that’s exactly what it was? Can the spots occur for only a day?

Much like the herpes virus in humans, Lympho can come and go throughout the life of the animal.

 

[Dbichler]

Heavy seaweed diet nori is great. I feed everything from scallops salmon pellets and flake as much variety as possible.