Neons with disease? (help please )

tbone

AC Members
Feb 15, 2005
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Vancouver, Canada
I have 7 neons in my 29 gallon tank. Its medium planted so all the levels are low. Ammonia 0 nitrite 0 nitrates 0 (I dont fert this tank) PH 7.2

Its been running for over a year Iv'e had the same neons in there since it was set up. I havent added fish to it for a while now. Months I think.

So anyway I noticed a neon acting strange. Seems to be having trouble staying in one spot. The other neans can "float" i guess in one spot without moving a fin and just staying there. But this one couldnt. I looked closer and I think one of his fins was a little frayed. So I figured his swimming problems was due to that. But now I see that 3 other fish today are having the same trouble. I can't see anything wrong with their fins. They also seem to be swimming head towards the ground. Almost in circles but not in a tight circle. Also they are clamping their front fins

Neonfins.jpg


The ones that the arrow is pointing to.


Swim bladder I guess. The affected fish also seem to have bloated bellies. If it were constipation I dont think 4 fish would be at the same time. So how do I treat? There seems to be multiple causes for it. Anyone have success treating? Could I be wrong and you can sugest another possibility?
If they are affected is it a good bet the other fish are too? Should I treat the whole thing? I have 2 cories 7 neons 2 platies(both female) and 2 danio's
 
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