Ichthyapus keramanus is a species of snake eel native to the western Pacific Ocean where it is only known to occur around the Kerama Islands near Okinawa, Japan. It is known to occur at depths of from . This species can reach a length of TL. This species is placed in the genus Ichthyapus.McCosker, J.E. & Hibino, Y. (2015): A review of the finless snake eels of the genus Apterichtus (Anguilliformes: Ophichthidae), with the description of five new species. Zootaxa, 3941 (1): 49–78.
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