Chromis death in QT, Uronema Marinum?

[EugeneReef]

Purchased 5 Chromies on Thursday and they've been in the QT. Yesterday I noticed a dark spot on the back of one of them but it seemed to be eating normally. Today it was dead. Naturally the first thing I think of is Uronema Marinum, is this that? I have a bit of doubt as Uronema is generally described as causing red blotches and this was more of a dark color. Also I didn't notice anything with the slime coat or scales which is supposedly part of it. Could it be an internal outbreak of Uronema? The dark spot is a little hard to see in this pic as it's under his fin. There is also a smaller dark spot above his head I think. Is this definitive enough to tell what caused the death?

Another important piece of info, I had what I am believe was a brooklynella outbreak about three months ago that wiped out all my fish except an my female ocellaris. That female clownfish was treated in this same QT using acriflavine, recovered (though to be honest she never presented symptoms), and I have since had a male clown and a kamohara blenny pass through the QT without getting sick themselves. So I must consider the possibility that this could be the original parasite resurging though it does seem unlikely to me given I have had two other fish who resided in the QT for some weeks without getting sick. Also this other parasite presented very much like brook (ragged slime coat, patchy scales) but I don't really see this in the chromis that died.

Thanks for any insight

 

[EugeneReef]

Correction, the brooklynella outbreak was 5 months ago. Adding as a new post since I can't figure out how to edit posts on this forum (perhaps it's not possible)?

 

[Louis Z]

Yes u can edit but must be done quickly . I don't know the time limit but after an hour you can't edit. Hopefully someone chimes in . As for using acriflavine only . I don't know if that is adequate to completely eradicate brooklynella . I always think uronema =bloody sores. Brooklynella has always presented to me as resembling velvet with degenerating fins . Both velvet and Brooklynella can attack gills and cause the fish to seem never able to catch its breath per say . They usually always swim in a current . Unfortunately without looking under a microscope, we are just guessing. Formalin dip recommended for Brooklynella . I use copper for velvet I would have used copper or formalin at different times to be sure of eradication of either disease if I didn't confirm diagnosis. I know that is tough on the fish but to be sure of no further infections is gold to me . Sort of like the situation your are in . Hopefully someone else gives their ideas.

 

[Louis Z]

Yes u can edit but must be done quickly . I don't know the time limit but after an hour you can't edit. Hopefully someone chimes in . As for using acriflavine only . I don't know if that is adequate to completely eradicate brooklynella . I always think uronema =bloody sores. Brooklynella has always presented to me as resembling velvet with degenerating fins . Both velvet and Brooklynella can attack gills and cause the fish to seem never able to catch its breath per say . They usually always swim in a current . Unfortunately without looking under a microscope, we are just guessing. Formalin dip recommended for Brooklynella . I use copper for velvet I would have used copper or formalin at different times to be sure of eradication of either disease if I didn't confirm diagnosis. I know that is tough on the fish but to be sure of no further infections is gold to me . Sort of like the situation your are in . Looking at your picture I would say uronema because of red spot . I usually use metronidazole in beginning stages of QT ( general cure )Metro is supposed to eradicate uronema but chloroquine phosphate seems to work better with some users.

 

[Louis Z]

Sorry for double post . Got interrupted

 

[EugeneReef]

Thanks. I guess I just need to keep an eye on the other Chromis and see if they get sick. Nothing so far, they seem quite healthy.

 

[EugeneReef]

As far as the brook, when I got it I moved the clown to the QT and let the DT run fallow for 2 months. During this time I treated the clown (who was never symptomatic) with acriflavine in the QT for a 2 week period using commercial product ruby reef rally. At the end of the fallow period the clown went back in the DT. No signs of disease in the two new fish introduced since then either. So either I did somehow get rid of the brook or it's dormant. Or maybe it was never brook. You really never know 100% in this hobby unless you are an ichthyologist I think. You can find the gory details of the original brook outbreak if you are curious in my post history. I always come back to this forum when I need help as the people here seem very knowledgeable.