No your goldfish did not "evolve" it "SURVIVED" being put in salt water. You don't say how much salt is/was in the water but placing a goldfish in water to which 1 teaspoon of salt has been added per gallon is a commonly used cure for fungus. Goldfish did not evolve they were selectively bred by Chinese aquarists from a species of wild Asian carp (Carassius gibelio) that had evolved over many millions of years.
a goldfish lives with water to breath in if there overfeed they can still live they just need water to breath you should change the water evrry week if you cange it before then a week they get sick then they die
Water.
In waterin the water
no
I wouldn't think so as goldfish can't live in salt water.
The fresh water part .... Goldfish apparently come from Asia, however they don't live in the ocean because goldfish are fresh water fish.
Yes
water
A goldfish.
yes
No unless you want a cooked Goldfish!
Goldfish are meant to live in cold water, not the warm water in a tropical aquarium. This is a huge reason why goldfish and tropicals shouldn't be in the same tank.