DUBLIN (Reuters) - The gap between British and European Union negotiators on the remaining Brexit sticking point of fishing rights is still wide, but enough progress has been made that a deal is still likely, Irish Prime Minister Micheál Martin said on Wednesday. “The gap is still wide on fish. You will have read that the European Union put 25% on the table in terms of conceding that amount of catch in the UK waters and a six-year transition period and I think Britain have a far more stringent (position),” Martin told national broadcaster RTE. “If you had a breakthrough tonight or tomorrow, officials in Europe could be working Christmas Day on the text. On balance, I think given the progress that has been made that there should be a deal. A no deal would be an appalling shock to the economic system on top of COVID-19.”