Previous studies on nutritive value of FPH were preferentially conducted on fish larvae since themore digestable and absorbable peptides in FPH were beneficial for the less developed digestive tract of larvae. The studies on application of FPH in juvenile or ongrowing fish are relatively lacking but they are also worthwhile especially in marine carnivorous species. More efficient use of marine protein is an important way to alleviate the fish meal shortage and
support sustainable aquaculture.