alt Hacker NewsIt has already been known for a long time fish, and in particular tuna, carry a lot of worms and parasites, which is why freezing rules are in place in pretty much every country.
For example here are EU regulations regarding freezing Tuna
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=PI_...
Prob dumb question but what about sushi? I'm talking about the storied markets in Japan where they go bid on the fish fresh off the boat.
EDIT: Looks like the next thread down goes into this. It is flash frozen to kill the parasites, usually on the boat.