Datnoid white stuff

[Arowana.hw]

Have you tested your water?

Yes

If yes, what is your ammonia?

0

If yes, what is your nitrite?

0

If yes, what is your nitrate?

5

If I did not test my water...

1. ...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.

Do you do water changes?

Yes

What percentage of water do you change?

51-60%

How frequently do you change your water?

Every week

If I do not change my water...

1. ...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.

Any Datnoid pro know what this is and how to treat it. They are eating and active. It also looks like it’s spreading to other datnoids only. Their dorsal spine have white stuff

 

[Midwater]

Never seen that on a dat, and it does not look good.

What temperature is your water?

 

[Arowana.hw]

Temp is at 82, it’s weird cause they are active and eating. I moved them to a separate tank and currently lower temp to 76 and treating with sulfaplex. Not sure what’s the correct med for this disease. Some type of fungus?

 

[Midwater]

I don't know what it is, but I would keep the temperature high.

 

[Arowana.hw]

Lower temp helps slow down the fungus. Gives time for treatment to kick in.

 

[danotaylor]

Looks rough alright. I would add salt @ 1tbsp/5gal as well to reduce bacterial load in the water column, stimulate slime coat regeneration, and help prevent secondary bacterial infection.
This could be a long shot, and I have never kept dats before, but I notice in a lot of pics that they do like to hang vertically alongside structure. Is it possible its heater burns?

 

[Arowana.hw]

not a heater burn, I have them in my hob. It’s a mix of injury from fighting with each other which leads to some secondary infection and then they spread it to each other. The weird thing is they act fine, swim around and eat. The infection starts at the tip of the dorsal spine and then spread all over the top. The bacteria seems to only impact the Datnoid specie

 

[danotaylor]

Very peculiar. Dropping the temp is right if you believe it is bacterial in nature

 

[Arowana.hw]

Looks to be Lymphocystis

 

[Simonas]

How bizarre
Exactly the same I have had with my 12" datnoid up until recently. It took a few weeks to clear but its clear and the fish looks happy and stable again not that he looked particularly unhappy with the white stuff
Mine was all over the dorsal spikes too I wondered if it had been damaged in a spat etc but who knows
I couldnt seperate mine so I literally treated the tank with acraflavin, switched my UV off and kept up the same temperature and water change routine so the only difference was adding acraflavin every wednesday and sunday for 3 weeks until it went

Its been about 4 weeks now since it went and it hasnt returned