I got a new betta last night for my empty 20 gallon. When I got home and got him in the tank, I noticed a white patch--kind of looks like mold--just under his dorsal fin, on top of his back. It's about 2 or 3 millimeters in diameter.
I'll post pics once my batteries charge, but I was wondering--anyone think that this might clear up on its own, now that he's out of his cup and in better water? Or do you think immediate treatment is necessary?
My first thought was that maybe it's columnaris. But I want some advice, before medicating, because most columnaris meds kill shrimp (some feeder shrimp are the only other inhabitants in the tank, which is why I didn't quarantine).
Thanks!
I'll post pics once my batteries charge, but I was wondering--anyone think that this might clear up on its own, now that he's out of his cup and in better water? Or do you think immediate treatment is necessary?
My first thought was that maybe it's columnaris. But I want some advice, before medicating, because most columnaris meds kill shrimp (some feeder shrimp are the only other inhabitants in the tank, which is why I didn't quarantine).
Thanks!