Noorhaliza, A.A. et al. 2026. Upcycling of Mud Crab Shell Waste as a Natural Source of Carotenoids: A Comparative Study of Scylla olivacea and Scylla paramamosain. Grouper. 17, 2 (Sep. 2026), 512–519. DOI:https://doi.org/10.30736/grouper.v17i2.503.