Fish disease people help me out

It may very well be Marine Velvet Disease typically caused by the dinoflagellate protozoan Amyloodinium ocellatum. Can lead to secondary becterial infections. Your aquarium must be treated. Malachite Green, Nitrofurazone have been known to cure these symptoms.
 
Well, my friend here disagrees and says that sloughing of skin like that is a definite case of Uronema for which there's no cure and that your fish should be removed from your tank immediately.
 
Well, those are possibilities, nothing definitive. As far as I know, there are three stages to protozoan Amyloodinium ocellatum's life cycle, one of which is parasitic. Also, the symptoms associated with MVD are many, including skin damage, and white spots like the one on your specimen. Red lining on body, velvet texture, loss of scales etc are some others. On the other hand, the common Uronema symptoms are sloughing of skin, ulcers on skin etc. If the fish hasn't lost appetite, and is not acting lethargic (another two indicators of Uronema) but is rubbing against glass, sand, rock etc, I would lean towards MVD for the sake of your buddy.

HTHs
 
no rubbing at all.

fins look worse this morning :(

i can't get him out either. can't catch him if i tried. i should try to get a fish trap from a local buddy ASAP and get him out

Lunchbucket
 
he's a gonner :( still alive but has an ulcer or two on his right side and the fins are almost entirely gone :( i'm sure he's suffering but i can't get him out. i'd love to put him out of his misery if could :( just way too sad.

i just mainly hope he doesn't infect any other fish. or they have strong enough immune systems to fight anything off. from what i have heard yellow tangs are wussy fish :(

Lunchbucket
 
It looks like a possible nasty bacterial infection. My choice of treatment would be a furan-based antibiotic in quarantine.
 
Steven - thanks for the response. i'm sure it is nasty. today the white spots are now ulcers and he looks TERRIBLE. almost all the tail fin is gone and 1/2 the top fin is gone too. all the way down to the flesh and now the flesh is becoming red and almost ulcered.

sadly i can't get him out to treat in a QT :( i just wish he wasn't suffering...sad part is i wish he would just go peacefully to save him and us the agony of it all :( :(

Lunchbucket
 
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