Cod worms can infect various saltwater fish, especially cod, Pacific rockfish (also called Pacific red snapper), whiting, mackerel, haddock, herring and salmon. ... Some people have been unfortunate enough to eat fish with live worms in them. In such cases, two kinds of problems can develop.

Is it safe to eat cod fish with worms?

So much so, in fact, that they've got a name for it: cod worm. Apparently, it's not a danger to humans because when we cook the fish, the parasite dies. ... Once cooked, these worms pose no harm to a human when consumed.

Do all fish have worms in them?

All living organisms, including fish, can have parasites. Parasites are a natural occurrence, not contamination. ... Parasites do not present a health concern in thoroughly cooked fish. Parasites become a concern when consumers eat raw or lightly preserved fish such as sashimi, sushi, ceviche, and gravlax.