you can get in most portugese delis they eat it alot so have it year round my fav is in camden town

or italian delis but they only have it around xmas as its only eaten then

Murray cod are important as a large, beautiful and highly distinct Australian native animal. They are an icon of the Murray-Darling river system in which they occur, and are symbol of the river and its health (or lack of health). They are of great importance to both European and aboriginal people of the Murray-Darling river system. Murray cod are approximately the 4th largest wholly freshwater fish, which is a remarkable achievement in Australia, the driest inhabitat continent in the world.

Flying fish