Food and pharmaceutical industries all over the world are witnessing an increasing demand for collagen
and gelatin. Mammalian gelatins (porcine and bovine), being the most popular and widely used, are
subject to major constraints and skepticism among consumers due to socio-cultural and health-related
concerns. Fish gelatin (especially from warm-water fish) reportedly possesses similar characteristics to
porcine gelatin and may thus be considered as an alternative to mammalian gelatin for use in food
products. Production and utilization of fish gelatin not only satisfies the needs of consumers, but also
serves as a means to utilize some of the byproducts of the fishing industry. This review focuses on the
unique features, advantages, constraints, and challenges involved in the production and utilization of fish
gelatin in order to provide a comprehensive look and deeper insight on this important food ingredient, as
well as prospects for its future commercial exploitation and directions for future studies.