Whats wrong

[Dipen]

My gildfish cant swim properly.......i found its a swim bladder.....i fast him for 3 days....in 3 days i gave him a epsom salt bath......after 3 days it looks better.....but when i feed him pellets my fish again cant swim properly....what should i do to recover her....

 

[Rocksor]

Epsom salt bath and find a different food brand.

 

[duanes]

Sometimes soaking food a short time before adding to the tank helps.
Is it a balloon type?

They are known to commonly have bouyancy issues, and prone to swim bladder infections.
How often are you doing water changes?
if not frequent enough, or large enough, it could be that water quality not good enough to keep the fish's immune system from working in top form.