Jersey and Guernsey fishing boats are being turned away from France in the ongoing dispute over licences to trawl Jersey's waters.
Jersey's government says France has broken the terms of the Trade and Cooperation Agreement after some French ports were officially closed to the island's fishermen.
Guernsey's government said that while there are no formal measures stopping the Bailiwick's fleet from landing its catches, French merchants have advised waiting until the situation calms down.
This latest development comes after a flotilla of around 70 French fishing boats blockaded the island's main harbour on Thursday 6 May.
Barry Paint from Guernsey Fishermen's Association says "something's got to be done" to resolve the situation.
On 6 May a Jersey fishermen was blocked from landing his catch in Carteret in France by an "angry mob" on the harbour wall.
Jersey Fishermen's Association President Don Thompson says Jason Bonhomme was met by a crowd of angry French fishermen whose presence was "threatening".
Mr Thompson says the 400 kilograms of squid and cuttlefish should have been for human consumption but it is now just a "heartbreaking waste of life".
He adds the catch was a week's worth of work for the fishing boat which the crew will not make any money from.
Faced with dumping the fish he had caught at sea, Mr Bonhomme chose to return to Jersey and tried giving away his catch to islanders instead.