“Handler,” except with respect to fish and seafood, means any person that is engaged within this state as a distributor in the business of distributing any commodity in intrastate commerce, or any person that is engaged as a processor in the business of processing any commodity. With respect to fish and seafood, it means any person that is engaged in the business of the distribution or sale of fish or seafood to restaurants, or to retailers for resale to consumers, or to any other persons or concerns for resale or for sale direct to consumers.