Hello everyone~

Just as the title says, does clamped fins, shimmying + flashing = sure signs of flukes or internal parasite?

My Endlers are displaying those symptoms after i introduced a Endler that i bought from a fish farm in pasir ris.
Serve me right for not quarantining them

I've treated them with Prazi Gold and the seem fine afterwards,
but some that didn't made it through died.
Constant dosage is needed to keep the symptoms from appearing in the Endlers.

The main puzzle that i had is that all along,
I've kept a red molly who birthed fries in that tank too,
but the molly and her babies seemed fine,
and didn't seem to be affected by the 'flukes' at all, no symptoms.
Or could it be flexibacter columnaris?
I don't know

So i'm puzzled. And i need help from anybody who has experience regarding this.
Thank you.