Fish feed

摘要

A fish feed comprises 30 to 300 ppm polyphenol and 10 to 200 ppm carotenoid. The carotenoid is preferably astaxanthin. The polyphenol may be proanthocyanidin. The polyphenol is optionally a formulation made by a process such as masking, covering or micro-encapsulating with a film material or tabletizing possibly with dextrin or lactose.