European fisheries ministers are meeting to finalise a deal on fish quotas for next year.
BBC Scotland understands that there will be cuts to west coast haddock and prawn fisheries.
Prawn quotas in the North Sea are expected stay the same as last year but there could be a substantial reduction in the days boats can spend at sea.
Final quotas for shared stocks with Norway and the Faroe Islands will not be set until negotiations in January.
The EU Fisheries Council in Brussels follows talks between the EU and Norway breaking down.
Scottish Fisheries Secretary Richard Lochhead and Scottish Fishermen's Federation chief executive Bertie Armstrong said balance was needed in difficult times.