yes it will heal
Yes, they certainly can heal, but you need to take extra care to make sure that your tank water is as clean as possible.
Call the doctor.
The same thing that happens to people with other injuries.
Use a medicine called Mr. Yellow found in medical stores and pet shops. This cures fin rot.
Don't fall on your face.
You can't heal a wizard unless your on lunar and you mate just so happens to be using magic.
the fracture will not heal properly.
They put your pokemon on a machine to heal them
It makes your body not try to heal.
If you mean a black moor, or a goldfish that has always been generally black in colour, then it will depend on what is wrong with it.If the goldfish was a different colour & recently started getting black patches on it, it's quite possible that these are ammonia burns that are healing.To avoid this from happening again, you need to make sure that you do regular water changes in your tank to keep the ammonia down to zero
Very unlikely that it will heal correctly, may heal wrong causeing you pain to move it, if you can move it at all.
It bleeds and takes longer to heal leaving a worse scar.