Senator Rachel Siewert is moving to disallow Australia's Southern Bluefin Tuna quota for 2007.
"The Government wants to see Australia take the largest share of this critically endangered species, taking more than 5000 tonnes per year even as stocks have been hammered to the edge of extinction," Senator Siewert said.
"The Greens believe revelations of massive overfishing by Japan last year should have signalled an immediate cutback on quotas by all nations. Instead Australia is pushing ahead in total disregard of scientific advice, in a move which will sweep the oceans clean of this remarkable predatory fish."
"This species has been listed as overfished by Australia's Bureau of Rural Sciences every year since reporting began in 1992. The former Environment Minister turned his back on the Southern Bluefin; I hope the Honourable Malcolm Turnbull will act before the species and the industry - is wiped out by overfishing."
The disallowance vote in the Senate is expected after 6pm on Wednesday 7 February.