Probably because its water is foul and needs changing
They flick around the tank fast and move fast.
If the goldfish is swimming in water, it is alive.
it is poop it will eventually pop out while it is swimming around:-)
Swim bladder disease? http://www.straightdope.com/columns/read/1688/if-a-goldfish-is-swimming-on-its-side-is-this-a-bad-sign
When their swimming upside down its usually a sign that their dying
it stops swimming
Yes
There have been numerous songs connected with swimming or have swimming in the title. Examples are: * Swimming In Your Ocean- Crash Test Dummies * Radio - The Corrs * Goldfish Bowl - Sterophonics For more examples of songs with swimming in the lyrics see related link below.
Yes, they do.
Gravity
No!
if it is not swimming and it lays on its side then it is dead.