Lethargic naso tang

nemotang2019 · Apr 19, 2024

History:

I have a 75 g qt. Ammonia is checked with Seachem ammonia badge, and it’s ok.

I did 35 days of copper tx around 2.3-2.5 ppm and then three weeks of prazipro but forgot to turn off the uv light. So decided to do hyposalinity.
Now I’m into three weeks into hyposalinity.

A couple weeks ago, I went away for three days so had someone else feed the fishes while I was away. Well, when I came back, two Chromis had big slashes on their sides and they died shortly after. I’m thinking they fought due to lack of food. Then the next day I found an anthias dead.
Then soon after I noticed another anthias with big ulcer on his side with rough edges. Maybe two inches long and one inch height. Pretty large white patch. Then he died a few days later.

Now, I’ve noticed my blonde naso hiding a lot and not eating as much. He used to go for nori as soon as I put it into the tank. Now he doesn’t do that anymore. Also I noticed a broad white area on his side. Unlike the anthias, the white area isn’t ulcerated and not rough. So not sure what’s going on. I had the blonde naso for about two months and he’s been doing well until now.

One Chromis looks like he has open sore spot. Had him for two months too.

What should I do?

Here are water parameters.

Temp 78
Ammonia <0.02 ppm
Phosphate 0.90
Nitrate 44.2

Attached are photos.

Jay Hemdal · Apr 19, 2024

nemotang2019 Welcome to the Fish Disease Treatment and Diagnosis Forum!

The #fishmedic team and other knowledgeable members of our community will do our best to help you resolve your questions. Please provide as much of the following as you are able:

Brief description of the issue you are observing and answers to the following questions:
- How long have you had the fish with the condition?
- Did you quarantine with medication when you first acquired the fish? (If Yes, which medication?)
Current water quality measurements
Clear photos of the issue taken using WHITE light and/or a short video of any behaviors (post in your response or on YouTube).

If you can help us by providing as much of the above info as possible, it will make diagnosing and providing recommendations for treatment MUCH easier! The Fish Medic team will get back to you as quickly as possible. In the meantime, other members of our community may also share their experience with similar situations and advice that they may have regarding your situation.

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vetteguy53081 · Apr 19, 2024

nemotang2019 said:
History:

I have a 75 g qt. Ammonia is checked with Seachem ammonia badge, and it’s ok.

I did a 35 days of copper around 2.3-2.5 ppm and then three weeks of prazipro but forgot to turn off the uv light. So decided to do hyposalinity.
Now I’m into three weeks into hyposalinity.

A week ago, I went away for three days so had someone else feed the fishes while I was away. Well, when I came back, two Chromis had big slashes on their sides and they died shortly after. I’m thinking they fought due to lack of food.
Then soon after I noticed an anthias with big ulcer on his side with rough edges. Maybe two inches long and one inch height. Pretty large white patch. Then he died a few days later.

Now, I’ve noticed my blonde naso hiding a lot and not eating as much. He used to go for nori as soon as I put it into the tank. Now he doesn’t do that anymore. Also I noticed a broad white area on his side. Unlike the anthias, the white area isn’t ulcerated and not rough. So not sure what’s going on. I had the blonde naso for about two months and he’s been doing well until now.

One Chromis looks like he has open sore spot. Had him for two months too.

What should I do?

Here are water parameters.

Temp 78
Ammonia <0.02 ppm
Phosphate 0.90
Nitrate 44.2

Attached are photos.

Unfortunately there has been an ongoing issue with blonde Naso tangs over a year especially ones from Sri Lanka and they start out well and suddenly stop eating, become thin and lethargic and perish
Good news is I’m seeing a few survivors recently compared to several months ago but often there is nothing that can becc bc done to turn an affected one around

nemotang2019 · Apr 19, 2024

I was hoping maybe there was a solution for my blone naso since other fishes are affected as well…

vetteguy53081 · Apr 19, 2024

nemotang2019 said:
I was hoping maybe there was a solution for my blone naso since other fishes are affected as well…

Have another store verify your ammonia and ph and salinity with a Non-AOI test kit and increase oxygen with air stone but may not change much

nemotang2019 · Apr 19, 2024

Ph is 7.7
The parameters I checked are done by Hanna. I had air stone on since prazipro.

Jay Hemdal · Apr 19, 2024

nemotang2019 said:
Ph is 7.7
The parameters I checked are done by Hanna. I had air stone on since prazipro.

What is the current salinity/specific gravity?

Some of the lesions on the anthias and chromis may be Uronema - that thrives in hyposalinity.

The blonde naso is breathing fast and seems to have a bacterial disease. As mentioned, this species has been having a LOT of mortality lately, but usually within the first two to three week.