Guppy Horizontal at Surface

[billybass]

I have a 10 gal. tank with a Quiet Flow 10 filter with 12 Ramshorn snails and 2 female guppies and 3 male guppies. One of the females doesn't look too good now, and she is horizontal at the surface and gasping for breath. I moved her into a quarantine tank, but is there any hope she will live? She's a little old, about 1 1/4 years since I bought her from PetSmart. In a different thread, someone suggested she has fish TB, and if she does, how should I clean the tank without stressing the fish out?

 

[Delapool]

Tail looks pretty bent? Probably not much chance at this point.

What symptoms are you seeing on the fish (eg tail bent) and how long has it been like that. Could be genetics, bad fish food, recent births or infection.