Rummynose Tetra What's Happening?

[TekFish]

I have bought 6 rummynose tetras today I have acclimatized them and they seem OK except one hangs around on his own all the other 5 are siiting behind my Echinodorus and he swims around the tank exploring. It's probably nothing but can someone put my mind at rest please?

TekFish

Edit: He's started lying on the bottom I think he's kicking it...
I was expecting this since they're Rummies.

 

[Ps3Steveo]

Was gonna say if he's out of the group all the time there is more than likely something wrong, get the lfs to replace him.

 

[TekFish]

Turned out it's whirling disease or something similar, he's going to die, he's bright white and upside-down, wriggling, but upside-down.

TekFish

 

[Axyadbad]

Turned out it's whirling disease or something similar, he's going to die, he's bright white and upside-down, wriggling, but upside-down.

TekFish

I think this has just happened to one of mine, they've been fine for two days, nice red noses. Then one of them just started swimming about on its own and eventually spinning around and died

He seemed happy enough yesterday though?

 

[Jam Jam]

Same here two of mine did the same the other four are sound? Weird or what ?