Charlie McConalogue (Donegal, Fianna Fail) | Oireachtas source

The industry does. It might be useful to outline article 60 of the EU regulations on the weighing of fishery products:

Registered buyers, registered auctions or other bodies or persons which are responsible for the first marketing of fisheries products in a Member State shall be responsible for the accuracy of the weighing operation unless, in accordance with paragraph 3, the weighing takes place on board a fishing vessel, in which case it shall be the master’s responsibility.