The Fiji political party, the SDL, says the regime's decision to remove the Queen's image from the country's money is shameful.
It says there is deep regret in the country over the move.
The Reserve Bank announced last week that the Queen would be replaced by images of Fiji flora and fauna.
The SDL says it is a discourteous move and one an unelected government should not be making.
It says it is clear that the interim government is uncomfortable with properly established symbols of authority such as the Queen and the Great Council of Chiefs.
It says the regime should shelve the proposal, apologise to the Queen and leave the matter to be handled by the government to be elected in 2014.