But fishermen in Scotland and other European Union countries are furious.
The EU says 45% less cod must be caught each year, or we run the risk of the fish disappearing altogether.
Our seas are running low on stocks of white fish like cod and haddock.
So the EU says fishermen around the world must catch far smaller amounts.
From 2003, boats will have their fishing time cut to just 15 days a month.
But fisherman are angry because less fishing means many could lose their jobs.
In the UK, Scotland could suffer most because fishing is such a big industry there.