Pigmentation is one of the important quality attributes of the fish for consumer acceptability. by light and oxygen. Carotenoids also play Carotenoids are responsible for pigmentation of muscle in food fish and skin colour in ornamental other important functions as pro-vitamin- fish. As fish is not capable of synthesizing carotenoids de novo there is a need to incorporate A, antioxidants, immunoregulators and carotenoids in the diet of cultured species. Since synthetic carotenoids are known to have deteriorating effects on the environment, there is a gretat demand for inclusion of natural carotenoids in aquafeed to achieve bright colouration in fish. The possible use of naturally available carotenoid rich ingredients such as microalgal pigments (Chlorella vulgaris Beijer, Haematococcus pluvialis, Dunaliella salina (Dun.) Teodor), yeast extract (Phafia rhodozyma, Xanthophyllomyces that fishes with a high level of carotenoids dendrorhous), marigold, capsicum, etc. has been discussed in this article.
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