Uronema?

ShadowR55 · Jan 1, 2019

Not sure what this is on my purple tang, he looked fine yesterday. I did add a new fish on Friday and I don’t QT. But I do have an Oversized UV sterilizer that seems to be keeping everything in check.

white markings on belly

https://imgur.com/a/IZc0nIj

HotRocks · Jan 1, 2019

I don't see much in the pics. Without QT it could be just about anything. What do the spots look like?

ShadowR55 · Jan 1, 2019

HotRocks said:
I don't see much in the pics. Without QT it could be just about anything. What do the spots look like?

Maybe I should have described it as a blemish, it’s the big white blemish, not spots like ich.

Saveafish · Jan 1, 2019

Here

Big G · Jan 1, 2019

Could be scuff marks from when it wedges in to sleep at night. Or that white-ish area could be the beginning of a bacterial infection and should be watched closely. Do you have any of the following antibiotics on hand if necessary: Kanaplex, Furan2, Metro, Sulfaplex, or NFG?
from Humblefish:

Bacterial infections:

Symptoms - Sometimes it's self-describing: Popeye/cloudy eyes, fin & tail rot, dropsy (bloated fish), etc. But some other bacterial infections, such as furunculosis, hemorrhagic septicemia, etc., can have varying visible symptoms. Any redness or open sores/wounds on a fish should be viewed with suspicion. Also, a white film or fungus-looking growth may denote a bacterial infection. It’s important to note that in many cases a bacterial infection is usually secondary in nature to a parasitic infestation such as ich, meaning if a fish has been battling ich for a while then his immune system has been lowered. This makes infection more likely for many opportunistic, harmful bacteria.

Treatment options - Broad spectrum antibiotic medication i.e. one that treats both gram-positive and gram-negative bacterial diseases. Examples of this include Furan-2, Kanamycin aka Seachem Kanaplex, Nitrofuracin Green Powder, Triple Sulfa Powder, or a combination of using both Erythromycin & Minocycline. The latter can be accomplished (albeit expensively) by using freshwater Maracyn 1 & 2 and then doubling the dosage for saltwater use. When battling a particularly nasty bacterial infection, combining Furan-2, Kanaplex and metronidazole (ex. Seachem MetroPlex) can be very effective (and safe). Props to “hedgedrew” for enlightening me of this.