White fungus?

[JohnnyB in SD]

I have a 20gl quarantine tank that has had a chainlink moray eel in it for 90 days. He's been eating well and growing fast. Because of his ability to escape, I have not been able to move him to my main system which lacks proper security.

The QT tank is 1.025 SG with no measurable ammonia or nitrates. Frequent water changes keep nitrates at 10ppm or less.

3 weeks ago I acquired a Naso Tang and added him, after a freshwater dip, into QT with the chainlink. In 5 days the tang showed white patches on his sides. Within 48 hours he died. I took the attached pic to my local LFS, their prognosis was a fungus.

About a week ago, the chainlink stopped eating. Finally got him to swallow some squid, but he regurgitated it within 6 hours. Couple days later he ate shrimp, regurgitated that as well. Yesterday morning, he ate shrimp again, he finally seems to have digested it. This evening he was out & about, I noticed white white patch towards his tail, similar to what the tang had but about 1.5" long and thin.
Aside from his eating, his behavior is normal.

I have been unable to find conclusive identification or a possible remedy.
Thoughts /suggestions are greatly appreciated.

 

[Mrscribbled]

How large was the naso? Why did you purchase it and put in a twenty gallon tank? With an eel too? And why did you pu rchase an eel and still not have a secure lid on the display tank? Sounds like your doing some impulse buying?

Fungus in full salt is rare, if it does in fact show up it is usually secondary to a parasite. This however does not look fungus too me.

 

[Mrscribbled]

I'd suspect flukes.

 

[JohnnyB in SD]

Thanks for the response. How would one confirm flukes?
I do have a microscope. May attempt a sample off the eel, but wouldn't know how to confirm what I'm looking at, probably unable to obtain magnified pic.
Would a FW dip with methylene blue and follow up with PraziPro in the QT be an appropriate course of action?

 

[Mrscribbled]

Just prozi pro. If symptoms do not improve in 5 days do 50 percent water change and re-dose. A fresh water bath for 5 to 10 minutes will reveal flukes but can not be performed on eels.

 

[JohnnyB in SD]

PraziPro says it doesn't harm the biological filter. What's it do to inverts?

 

[Mrscribbled]

Perfectly safe, I've used in reef tanks to control bristle worms. Will kill tube worms (feather dusters)