Anthias having big white spots on its upper fin

[Utkarsh]

My anthias was having a big white dot on its upper fin, i read in this and other forums about similar case and everyone said it was lympho virus not ich. So i focussed on doing water changes to keep up with water quality.
But today the anthias isnt active as it used to be, the white spot has grown and now it seems like a short white continuous line and these lines are on its upper fin and nowhere else.
Plus today the fish is breathing heavily, i cant understand what is it, please help.

 

[Dr. Reef Verified Sponsor]

hard to tell from those pics. have you treat fish for anything? flukes maybe lympho has no cure except for keeping water quality at its best. sure its not ich? ammonia poisoning?
did you qt the fish or is it in your main tank?

 

[Utkarsh]

hard to tell from those pics. have you treat fish for anything? flukes maybe lympho has no cure except for keeping water quality at its best. sure its not ich? ammonia poisoning?
did you qt the fish or is it in your main tank?

I am sure it isnt ich, as the fish is showing no signs of scratching or rubbing. Plus the white lines are only restricted to its upper fin. However it is breathing heavily and is not accepting food now.
I am about to transfer it to, my hospital tank, but what to treat it with? Prazipro or cupramine, as i am not sure what is happening to the this fish.

 

[Big G]

White-ish areas should always be looked upon with suspicion. Leaning perhaps to a bacterial infection. Here's Humblefish's descriptor and treatment advisory. Note the highlighted areas:

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.