Because your goldfish is dead.
I'm sorry, but your goldfish is dead....
dead pond fish
Its dead
if it is not swimming and it lays on its side then it is dead.
Its DEAD
If it does that it's dead
If the goldfish is upside down and it is bloated, ................................It might be DEAD!
Get a second goldfish.
without a doubt.the minute a dead goldfish is spotted it must be removed from the tank.it will quickly deteriorate the water quality.
then they are just playing
It's Dead!!