is this nail separation or does any one have any ideas?
It is not clear what you are referring to. Maybe include another nail in your pic to highlight the difference. Do you have any symptoms besides the optical appearance of the nail?
This is your just nail breaking, it's nothing serious to worry about. Some people have very brittle nails that allows this to happen. Make sure to take care of your nails and if this persists, take vitamin supplements for nail health.