Fish Ill :(

[pinksugababe69]

I have 6 white cloud mountain minnow's and one has become ill I think.
He doesnt eat and doesnt swim.
So I have seperated it from the rest and put it in a new tank but no improvement?
Help!xx

 

[Piltdownpaul]

What are your tank statistics and water stats. ? How long has your tank been set up-is it fully cycled?