If the fish is a pet and not food for a pet then its best not to pick them up with anything but a net. Fish have a slime coat that protects their scales. Touching them with your hands can remove this coat and cant harm your fish. It will most likely give your fish a harsh burning sensation
Well goldfish move their fins of course.
Take your goldfish. They will travel.
Sometimes they do and at others they are pretty well comatose.
Goldfish are naturally attracted to rotting fins, so if your goldfish has rotting fins get a cure for it or change your water. Or, in the other case, if that goldfish is bullying its tankmate, move the bully or victim to another tank or return the bully to the pet store.
Because that's how it breaths. Are you really that dumb?
Goldfish have been known to eat their own young so moving the mother goldfish out of the tank and into another is probably a good idea. You do not need to do this if the eggs have not been fertilized by a male goldfish. In that case, it is perfectly fine to leave the eggs with the mother as she will greatly enjoy devouring them.
They flick around the tank fast and move fast.
No,they are to small and not strong enough.
Some common breeds of goldfish are: the Black Moor goldfish, the Ryunkin goldfish, the comet goldfish, the common goldfish, the Calico Fantail goldfish, the telescope eye goldfish, the bubble eye goldfish, the pearl scale goldfish and the Oranda goldfish.
Yes the mother goldfish will eat the fry-and so will the father, that's why it is a good idea to move the parents into a sepperate tank after they have bred if you want the babies to live.
Maybe, if you don't move the eggs.
Goldfish do not 'give birth' they spawn as a group. There is no need to change anything after they have spawned other than to either move the eggs or the adult fish if you wish to raise of young.