If it is desired to expand the retail trade in perishable fisheries products, and in some circumstances if is is even to maintain its present level, the individual retail trading enterprise will from time to time need special support, for example, by way of training, or education of the consumer. Any controlling legislation must take into account the peculiar requirements and circumstances of the fish trade; pulic infrastructure should permit the proper handling of a very perishable product. For those who may be responsible for providing such support or infrastructure, or for drafting and administering legislation, various systems of selling fresh fish are described and the principles that should govern their design and operation are noted. The systems covered are itinerant selling; market stalls; specialized shops and supermarkets.