KnowraAstaxanthinLinked fromLinked fromThe 3 pages that link to Astaxanthin, each with the reason it gives.All 3Compared with 3Beta-caroteneCompared with: It is another strongly colored carotenoid, but it does not serve as a vitamin A precursor.LuteinCompared with: It is another oxygenated carotenoid, but its distribution and biological roles differ from lutein's.FucoxanthinCompared with: Its red color and biological sources contrast with fucoxanthin’s brown-algal association.