freshwater baths

[Myka]

The best treatment for Brookynella I've used is Formalin dips. You really need to be sure it is Brook though. Treatment for Brook whether it be Formalin or the ever popular (although despised by me) copper treatment, are both harsh medicines. I've had better results with Formalin.

[troni]

[gregzz4]

I've never seen Septicemia anywhere except around fins, but the color is right
Maybe there used to be a parasite attached ?

[troni]

but they are still acting weird

[gregzz4]

Originally Posted by troni

but they are still acting weird

That's not abnormal as, whatever the infection is, they aren't happy.
Hopefully someone more experienced than I will see your pic and chime in.
In the meantime, read up on Septicemia just in case that's what it is. This way if it's the infection, you'll be prepared to deal with it.
But don't do anything until someone gives you a firmer diagnosis.

[gregzz4]

Maybe re-post the picture under something like;
Help what's this disease ?
Or something like that