Two parasitic cymothoidae (Crustacea, Isopoda) are reported parasitizing fishes Hemiramphidae in India. Ceratothoa angulata, found in the buccal cavity of its host, is reported for the first time from India. Mothocya plagulophora, a branchial species, already known from the Southwest coast, is now recorded from the Southeast coast of India. Host-parasite relationships are considered.
Keywords: Ceratothoa; Cymothoidae; India; Isopoda; Mothocya.