Blue Green Chromis - White spot??

RiversideReefer · Apr 16, 2020

Hey guys i got 3 blue green chormis 11 days ago. They seem happy, active, aggressive feeding, however i noticed a spot on the smallest chromis today.. wondering if i should be worried? other fish have nothing on them, and the smallest chromis can be seen being chased by the big chromis from time to time but usually only during feeding time (as far as i can see). these are my first and only fish, and i have no corals.

Here is a picture... the dot looks blue in the picture but it is actually white and i think i see like a slight red line? it does appear to be bumpy.

Jaebster · Apr 16, 2020

Looks like Uronema... dont know much about it except that the Chromis is prone to this disease. Others will chime in.

RiversideReefer · Apr 16, 2020

Jaebster said:
Looks like Uronema... dont know much about it except that the Chromis is prone to this disease. Others will chime in.

ahh ok.. so far it doesnt seem to look like anything in the pictures when i search uronema chormis... unless its at its beginning states. will uronema begin to grow ontop of the fish skin?? or is it more of a under the skin thing? because this white spot is protruding from the skin a bit. i'm almost wondering if its from bullying... but its not like these fish have teeth right?

Jaebster · Apr 16, 2020

Chromis have teeth albeit very small. Unfortunately, I'm no fish disease expert so I cant say one way or another... but seeing the picture and knowing that the fish is a Chromis, the first thought was Uronema. Theres lots of people here of lots of knowledge and they'll post up. Good luck!

Jaebster · Apr 17, 2020

Here's a recent thread that may be helpful...

Uronema marinum on Green Chromis in QT

So I got some Green Chromis and put them in QT. I had one Green Chromis die with a red spot near its gills. I thought it may have been someone picking on him. Today i noticed another one with a spot near the top of his head and googled. sure enough it matches Uronema marinum. I have 3 more...

www.reef2reef.com

Redfoxtang · Apr 17, 2020

I do see a red spot also and would suspect Uronema. Did you QT these fish before adding to display? Here is a good article on the subject.

Uronema marinum

Uronema marinum What You Need To Know: * These are the red sores most often seen on chromis damsels; however it can afflict any fish. * Treatment of choice is a 45 minute formalin bath (e.g. Quick Cure), followed by transfer into a new/sterile QT. * Once in QT, it is very important to do...

www.reef2reef.com

RiversideReefer · Apr 17, 2020

Redfoxtang said:
I do see a red spot also and would suspect Uronema. Did you QT these fish before adding to display? Here is a good article on the subject.

Uronema marinum

Uronema marinum What You Need To Know: * These are the red sores most often seen on chromis damsels; however it can afflict any fish. * Treatment of choice is a 45 minute formalin bath (e.g. Quick Cure), followed by transfer into a new/sterile QT. * Once in QT, it is very important to do...

www.reef2reef.com

appreciate the article - i know it looks red in the picture but the spot is white. almost like a flesh wound it looks like. i know its a bad picture

Redfoxtang · Apr 17, 2020

Try and snap another picture. Yea unfortunately the picture that’s posted does look red.

RiversideReefer · Apr 17, 2020

Redfoxtang said:
Try and snap another picture. Yea unfortunately the picture that’s posted does look red.

will do as soon as i get home after work! and no, i did not QT the fishes... these are my very first fish and i do not yet have a QT set up (my first tank as well). i will now look into setting up a QT tank before my next purchase!

Redfoxtang · Apr 17, 2020

No problem. But unfortunately those Chromis are very prone to having Uronema so let’s just hope it’s not the case!

RiversideReefer · Apr 17, 2020

its hard to get a good picture haha.. but here are some more.

Redfoxtang · Apr 17, 2020

I can see the white now and mixed with a little red maybe he scraped himself against a rock. The white would resemble skin tore. Keep an eye on it and make sure it doesn’t grow larger. If so we are dealing with something different.

RiversideReefer · Apr 17, 2020

Redfoxtang said:
I can see the white now and mixed with a little red maybe he scraped himself against a rock. The white would resemble skin tore. Keep an eye on it and make sure it doesn’t grow larger. If so we are dealing with something different.

Will definitely keep and eye on it. Thank you very much for your help!!