Green’s Dictionary of Slang

(Aus.) the barramundi fish.

2015		N. Cummins Tales of the Honey Badger [ebook] There’s a moat around most of the ground [...] Throw some water and barra in there and the place would be heaven.
2016		N. Cummins Adventures of the Honey Badger [ebook] After some grub, it was a case of removing the matchsticks and letting the eyelids drop. We were hunting barra tomorrow!