Hi, There is no specific mental health nurse training in Australia. Some nurses do a grad programme in mental health after gaining general registration. I think this is a 12 or 18 month course only where they gain what is called an endoresment. I'm a mental health overseas trained nurse and work in Queensland. Most nurses I have worked with in mental health are general trained with no mental health qualifications so with some experience in mental health you would get an RN possition. Mental health qualifications would be required for a higher possition however eg: Nurse Unit Manager.