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Energy Dispersive X-Ray Microanalysis (EDXMA) has been used as the non-invasive technique on Indian helminthes to explore the role of nematode parasites as bioindicators in the marine ecosystem of Central West coast of India for the first time. The investigation incorporates assertions on the possible benefit of such technology to elucidate bioremediating prospects that could be helpful to establish helminth parasites as a tool representing Bioindicators. The accumulation of Sulphur and Iron were analysed from a raphidascaridoid roundworm, Rostellascaris spinicaudatum (Malhotra and Anas) parasitizing marine catfish, Arius maculatus from the Central west coast of India at Goa. Quantitatively, the cuticle on oral armature comprised as much as ten times more Sulphur than iron content in the roundworm under study. However, only Carbon and Oxygen were detected over caudal papillae, where no metals or other elements were recorded.