The Scottish Government has been urged to be “more positive and more cheerful” about the prospects of Brexit.
Economy Secretary Keith Brown warned Holyrood that Scotland faced economic uncertainty as a result of the UK-wide vote to leave the EU.
But Scottish Conservative MSP Murdo Fraser said the SNP government should be preparing to take advantage of the break from Brussels.
He was joined by colleague Liam Kerr who suggested Brexit presented “great opportunities” for the fishing industry.
The north-east MSP said there was now a chance to “reinvigorate” Scotland’s coastal and island communities and deliver a “thriving and profitable” seafood industry.
A poll before the EU referendum in June suggested the vast majority of Scottish fishermen would back Leave.
Mr Kerr said: “It comes as no surprise that the Scottish Government has had nothing positive to say to the fishing industry and the huge opportunities opened to it, and other industries, by the UK’s vote to leave the EU.
“For years, they have hidden behind European regulations that they oppose in Buchan but back in Brussels.
“It’s time for the SNP to start acting in the interests of all Scotland’s industries and that means working with and as part of the UK.”
Mr Brown had earlier demanded the UK Government deliver a capital stimulus to try to stave off a Brexit-induced economic downturn.
“I am calling for the Treasury to take this action as a clear plan for how the UK Government can help at this critical juncture for our economy,” he said.
“Last week’s employment figures show our unemployment rate is now lower than the UK as a whole. But a failure to act at a UK level could put that really encouraging progress in jeopardy.”
But the Scottish Conservatives’ finance spokesman Mr Fraser said it was uncertainty over a possible second referendum on independence which risked harming the Scottish economy.
He said: “We on this side of the chamber (the Conservatives) are positive and optimistic about Scotland’s future within the UK and outside the EU.
“I hope that Scottish ministers can find it in themselves to be less dismal, less miserable, less downbeat and less pessimistic, to be more positive, more cheerful and more hopeful and to show some real leadership in seizing the opportunities for the future.”