Looks like it, but to be sure of the identification you would need an x-ray for vertebrae counts (M. prionosa has 68-73 vertebrae, versus 59-61 in M. indica and 63-67 in M. atlantica). The locality might help too, as M. prionosa is mainly distributed in the South Atlantic and around the Antarctic, while M. indica occurs in the tropical Indo-Pacific and M. atlantica mainly in the Northern Hemisphere.