A Scottish shellfish firm has warned it is on the brink of bankruptcy as delays continue at ports following the introduction of post-Brexit red tape.
Lochfyne Langoustines managing director Jamie McMillan said his firm had already lost some consignments after they were found to be rotten by the time they arrived in France.
He also warned EU customers were now going to Denmark to buy langoustines.
Mr McMillan described it as a "very, very serious situation".
His comments came after transport company DFDS announced a further delay in exports of group consignments of seafood to the EU.
It halted groupage exports last week
after delays in getting new paperwork for EU border posts in France.
DFDS said it would not resume those exports until Monday.
Mr McMillan told BBC Radio's Good Morning Scotland programme: "We've been screaming for the last six months - eight months - that we have to get our produce to market within 12 to 24 hours.
"Any delays in that process, our shellfish will arrive in France dead.
"We lost two pallets last week. It took five days to arrive in Boulogne from Scotland, so our goods were rotten on arrival."
Transport company DFDS has said it will not resume groupage exports until Monday
He added: "Customers are not buying from us any more - we have become unreliable suppliers.
"Everybody has stopped buying. This has happened for the past two weeks. We can't continue this to happen for another week because we will be out of business.
"We have had no sales to the EU, our biggest market for live shellfish, in the last two weeks.
"If we go another week without that, we are finished."
Mr McMillan said there were "sticking points" in both the UK and France, with transportation hubs in Scotland struggling with increased paperwork and checks by vets.
"There are sticking points down in France as well," he said.
"There are delays at the borders in France for up to 30 hours, I'm hearing, to clear customs by the time they do all their checks."
The UK government's Scotland Office minister David Duguid said he did not underestimate the struggles the industry was facing with paperwork, IT and ports.
He said the UK and Scottish governments, fish exporters and the EU needed to come together to work through the issues, which he estimated would last "weeks" and not months.
'Piece of string'
He told Good Morning Scotland: "What I can commit to is that the UK government, whether that's through Defra or the Scotland Office, we are working day and night in resolving the issues that we know about and that we can fix directly.
"The other issues that are maybe the responsibility of the Scottish government, or indeed the EU on the other side of the channel, Defra are engaging heavily with those parties as well."
However, when asked directly on the programme how long the problems would last, Mr Duguid responded: "How long is a piece of string?"