probably when they grow
Depending on the damage, a fin can grow back provided the fish is cared for properly and the water is clean
Yes
Provided the reason for the loss of fins is removed and the conditions the fish is living in are correct then yes the fins will usually grow back. They will however never be as good (well shaped) as the originals.
No, a dorsal fin from a fish is on its back area.
The dorsal fin is the fin on the back of a fish, for example the typical triangular fin on the back of a shark is its dorsal fin.
The fin on the top/back of all fish is called the "Dorsal Fin."
A swordfish has a fin on its back.
The Dorsal Fin is located on the "back" of a fish. Where the spine is.
it is the fin on the top near the back of the fish
If the neon is in a tank with other neons then there is a good chance it will grow back. If your neon is in with other fish and larger fish there is a very good chance it will be eaten "Big Fish Eat Little Fish".
Yes it is quite possible provided it is kept in reasonably good conditions and fed a reasonably good diet its damaged fin could well grow back