“…All wild and cultured crustacean species report the presence of free and esterified forms of various carotenoids, predominantly astaxanthin (Axn) (Castillo et al, 1982, Lenel et al, 1978, Tanaka et al, 1976, Sachindra et al, 2005. The distribution of these forms of carotenoids also varies with species, life history stages, developmental stage, moult stage and the organ or tissue of the animals (Ribeiro et al, 2001, Lenel et al, 1978, Sachindra et al, 2005, Okada et al, 1994, Pan and Chien, 2000, Dall, 1995, Petit et al, 1998, Valin et al, 1987, Katayama et al, 1971, Petit et al, 1997.…”