Ornamental fish farming is one of the most popular hobbies in the world. The pigmentation of ornamental fish may be an important factor affecting its market value and may also directly indicate its healthiness and quality. In nature, the fish meet their carotenoid requirements by ingesting aquatic plants or through their food chains. Fish cannot fully synthesize their own carotenoid colourings so these must be included in their diet. Synthetic carotenoid sources are widely used as supplements in fish diets for desired skin colorations. However, their usage is limited due to the high price of synthetic colourings. In addition, there is increasing consumer awareness about environmental impacts and safety of synthetic pigments. Therefore, natural compounds supplementation containing carotenoid is needed to enhance colour perfor-
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