Coulmnaris? There is a white stringy cotton thing on the fins that poke down (ibcant remember the name) not the anal fin. Did some research and I woul like some help making sure that is what's going on for sure. I read up that mythal blue could help? The ony meds I have around are things you can find at the petsmart and petco.
I've already started AQ salt, keeping the water clean (only got her last night and immediately did a water change when I saw the cotton string). She is in a 1/2 gal quarantine tank with a non adjustable heater. I sadly don't have another heater but plan on getting a better one Thursday when I get paid. Why else can I do?