הזיהויים של donalddavesne

The fish was approx 2 metres in length and found in approx 2 metres of depth: https://www.youtube.com/embed/A1_6F2Z4abU
Apparently this is only the 3rd reported sighting in Port Phillip Bay in 109 years: http://www.discoverlife.org/mp/20m?kind=Trachipterus+trachypterus

I found this little fish washed up near whale lookout at Cockle Creek in Tasmania.
I had never seen anything like it before, it was very brightly reflective silver with long whitish/red fins and tail.
It was very slender, only about 5mm thick and its body length was about 100mm.
It also had a fin the whole length of the top its body, on top of its head the fin was very long.
It also had upwards facing mouth.
See attached photos.

I hope you can identify this fish as it intrigued me!