Silver carp skin gelatin film has aroused wide attention due to its unique advantages including high safety and easy availability. However, the application of pure silver carp skin gelatin film in the food packaging industry is hampered due to its poor mechanical and barrier properties. In order to improve the properties of the film, the fish skin gelatin and sodium alginate were mixed to obtain composite films. The results showed that the composite films had a translucent appearance and could provide a shi...