The Ministerial Decree, which consists of only one article replacing article 4 of Ministerial Decree of 28 March 2000, lays down rules in matter of clam fishing in the maritime districts of Monfalcone, Venezia and Chioggia. Fishing vessels may catch not more than 500 kg of clams per day and not more than 1500 kg per week. The management consortia of Monfalcone, Venezia and Chioggia shall fix the total quantity of clams that may be caught daily by their members, without any prejudice to the total