Vietnamese gac fruit contains the highest known concentration of the carotenoid lycopene. The fovea has a high concentration of the yellow carotenoid pigments lutein and zeaxanthin. Astaxanthin is the main carotenoid in marine crustaceans (and fish). Coloration is produced from both red pigments and yellow carotenoid pigments. Each rhodopsin molecule consists of an opsin protein covalently linked to a carotenoid chromophore, 11-cis-3-hydroxyretinal. Another carotenoid, astaxanthin, can also be found deposited in flight and body feathers. Lipid bodies and carotenoid globules surround the plastid. Some mycobacteria produce carotenoid pigments without light. Cooking carotenoid-containing vegetables in oil increases carotenoid bioavailability. Carotenism refers to abnormal distribution of carotenoid pigments. All species of AAPB produce large amounts of carotenoid pigments. The plumage color of the males is produced from carotenoid pigments in the diet. The color of saffron comes from crocin, a red variety of carotenoid natural pigment. RPE65 belongs to the carotenoid oxygenase family of enzymes. Egg yolks gain their color from xanthophylls, also a type of carotenoid pigment.