Why does farm-raised salmon have a different color than wild-caught?



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    The color of salmon flesh depends on how rich their diet is in krill and shrimp. In the wild, the food that salmon eat are rich in carotenoid pigments, largely astaxanthin but also canthaxanthin, which are abscent in farmed fish diets. Farmed salmon are fed artificial food coloring that makes their flesh a more uniform pale red color.

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