as for treatment no, Salt is not a good choice, For many fish it's a good precautionary measure but not with snakeheads they have a low salt tolerance it will cause more stress/harm than good. Snakeheads are also very sensitive to most medications as well.
Melafix & Pimafix combination is my recommendation. It’s the only medication I’ve used effectively that is safe for snakeheads . Also start the treatment ASAP in my experience once the fuzzy starts on them you have a VERY short window to work with before it rapidly spreads and the channa dies.
if you do turn him around he'll need a new tank, putting him back with the rest is a death sentance.
I will go and check at my lfs about the medication.. Is there really no way they can be put back without killing each other??
Snake heads are tough b**tches
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