NJ Scuba has some good info and photo's of the species in question and the related identification clues. Many people can confuse the species(a certain person on this site probably has eaten all of them)
I did find some interesting info on a protozoa that was found in Ocean Pout years ago which put a stop to the fishery for some time(yikes!!)-but the parasite does not do well in mammals..... http://spo.nmfs.noaa.gov/mfr365/mfr3655.pdf