Abstract / Introduction / Summary:
Ceratothoa oxyrrhynchaena Koelbel, 1879 is a fishparasitic cymothoid isopod mainly found from the buccal cavity of Doederleinia berycoides (Hilgendorf, 1879) (Acropomatidae) and Dentex hypselosomus Bleeker, 1854 (Sparidae) in Japanese waters. In this study, we collected a non-ovigerous female and an adult male of C. oxyrrhynchaena from a commercially sold specimen of D. berycoides caught off Chiba Prefecture. As this represents the first record of this isopod from the prefecture, we report the parasitological data and morphology of the specimens.
