The main methods for the preservation, transportation, processing, and utilization of fish and fishery products are fresh-keeping, keep-alive, freezing, cold storage, canned products, pickled dried products, surimi products, fishmeal, fish oil, and processing of industrial products. Under normal circumstances, fresh fish should be supplied to the market as much as possible to suit people’s consumption habits. However, in large-scale farms or industrialized processing plants that are far away from the market and inaccessible to the transportation industry, in order to enrich the market supply and obtain greater profits and compete for the development of processed fish products, the freshwater fish processing industry that has become popular in recent years has emerged. Conversely, the development of the processing industry has shown its power and role in promoting and inspiring the development of the aquaculture industry.