Damselfish spot on fin - disease?

[Army_of_mantis_men]

Hello, I've noticed my damselfish is not present anymore and started hiding a lot, today I noticed bright spot on her back and I think the fin looks a bit chewed off like, like wet hair. She shimmers to my clowns as if showing submission but she's not rubbing off to anything or darting out. What could it be? Should I quarrantine her? Video enclosed

https://photos.app.goo.gl/nsfVPb4GyBqccANL6

 

[Marine Betta]

Hello, I've noticed my damselfish is not present anymore and started hiding a lot, today I noticed bright spot on her back and I think the fin looks a bit chewed off like, like wet hair. She shimmers to my clowns as if showing submission but she's not rubbing off to anything or darting out. What could it be? Should I quarrantine her? Video enclosed

https://photos.app.goo.gl/nsfVPb4GyBqccANL6

How long have you had the damsel? This looks like a bacterial infection or possibly uronema. Uronema lesions are usually more vertical in my experience, but it’s possible. Unfortunately, there isn’t much that can be done if it’s uronema once the lesion is visible.

I would treat with neoplex or kanaplex in a QT and hope that it’s bacterial.

 

[Army_of_mantis_men]

It's been in the tank roughly 2 months, my main concern is the spread, I wouldn't want it to infect other fish

 

[vetteguy53081]

How long have you had the damsel? This looks like a bacterial infection or possibly uronema. Uronema lesions are usually more vertical in my experience, but it’s possible. Unfortunately, there isn’t much that can be done if it’s uronema once the lesion is visible.

I would treat with neoplex or kanaplex in a QT and hope that it’s bacterial.

This is not even close to Uronema. Again - Let the fish medic do their thing !

 

[vetteguy53081]

Hello, I've noticed my damselfish is not present anymore and started hiding a lot, today I noticed bright spot on her back and I think the fin looks a bit chewed off like, like wet hair. She shimmers to my clowns as if showing submission but she's not rubbing off to anything or darting out. What could it be? Should I quarrantine her? Video enclosed

https://photos.app.goo.gl/nsfVPb4GyBqccANL6

This looks to be a bite injury and likely from the clowns who are territorial and becoming infected. Treat fish in a separate tank using seachem neoplex.

 

[vetteguy53081]

It's been in the tank roughly 2 months, my main concern is the spread, I wouldn't want it to infect other fish

This is not a disease and should not spread to others. If you are in Europe, you can use Waterlife Myxazin or NT Labs acriflavin

 

[Jay Hemdal Verified Community Expert]

Hello, I've noticed my damselfish is not present anymore and started hiding a lot, today I noticed bright spot on her back and I think the fin looks a bit chewed off like, like wet hair. She shimmers to my clowns as if showing submission but she's not rubbing off to anything or darting out. What could it be? Should I quarrantine her? Video enclosed

https://photos.app.goo.gl/nsfVPb4GyBqccANL6

I agree, this isn’t Uronema. I could see the damsel backing into the clowns - that is odd behavior, but the clowns may have been biting it. I also saw the purple Pseudochromis take a look at it. Most lesions like this start from some physical damage, often from physical damage.

Treating with a broad spectrum, gram negative antibiotic in a treatment tank would be the best thing, but you may not have access to those in Europe.

If you can’t get that, try what @vetteguy53081 suggested.

 

[Army_of_mantis_men]

I agree, this isn’t Uronema. I could see the damsel backing into the clowns - that is odd behavior, but the clowns may have been biting it. I also saw the purple Pseudochromis take a look at it. Most lesions like this start from some physical damage, often from physical damage.

Treating with a broad spectrum, gram negative antibiotic in a treatment tank would be the best thing, but you may not have access to those in Europe.

If you can’t get that, try what @vetteguy53081 suggested.

Thank you very much, I'm glad it's not that - I will observe and put to QT if it gets any worse, it's highly possible she got bit by clowns, mine are highly territorial and they keep chasing stuff away from their anemone.

 

[Jay Hemdal Verified Community Expert]

Thank you very much, I'm glad it's not that - I will observe and put to QT if it gets any worse, it's highly possible she got bit by clowns, mine are highly territorial and they keep chasing stuff away from their anemone.

I see a typo in my post, the second “physical damage” was supposed to read “tankmate aggression”