Cherrybim,
In a shiur given by Rabbi Shmuel Marcus, “Worms in Fish: When Torah and Science Collide?”, given on Sunday May 23, 2010
he says he spoke to the head of the COR which frequently consults with Rav Miller, who assurs, and the COR is currently investigating the prevalence of anisakis. I have posted a link to this shiur on page 2 of this thread.