help identifying something that attacking my angelfish after adding a new angelfish

[Liorshenhar]

hello a few weeks ago add a new angelfish and strange parsite become attacking all of the angelfish.
i tried formalin freashwater dips copper metronidazole parazi furan2 nothing seems to be working.

please assist

 

[JumboShrimp]

Wow, that’s quite a problem you have on your hands. Someone here should be able to give you direction on this. Did it start with the newly introduced fish, and spread from there? One by one, or everyone else at pretty much the same time? Over what period of time?

 

[Liorshenhar]

yes it took after bringing new fish took around 2 weeks

 

[Jay Hemdal Verified Community Expert]

hello a few weeks ago add a new angelfish and strange parsite become attacking all of the angelfish.
i tried formalin freashwater dips copper metronidazole parazi furan2 nothing seems to be working.

please assist

Welcome to Reef2Reef!

That doesn't resemble any parasitic disease, more likely viral or bacterial.

What angelfish was added, and how long after that did the other fish show symptoms?
How long did you treat with Furan-2?

Jay