If you’ve been avoiding fish because you’re concerned about mercury, you can eat sardines with no worries. Since sardines eat plankton, their mercury content is very low. What fish does not have worms in it? Which fish is least likely to have visible parasites? Trout. Salmon. Tuna. Mackerel. Sardines. Marlin. How do they clean sardines ...

In sardines, they have muscle strings/veins (?) that might be mistaken for small, stringy worms. I’m thinking of a specific pic/example that was shown in this subreddit about a week ago. I eat a LOT of fish (both tinned and frozen) and I’ve never seen worms or had any issues.

Can parasites live in canned salmon? Despite their presence in human food, the worms in canned salmon are cooked and present little risk to humans eating them. “Even if someone ate a live parasite in a piece of raw salmon, humans are not the preferred host, so the parasite wouldn't survive,” Mastick said.

And yes, sardines can get (and commonly have) a variety of worms. But none of them look like that. And any worms would be dead and unable to infect you from a can, since they're pressure canned at a higher temp than you could ever cook meat at home.

Do sardines commonly have parasites? Sardines, like many fish, can be hosts for various parasites; however, the incidence of parasites in canned sardines is quite low. The canning process involves high heat, which effectively eliminates most parasites. It’s also vital to source sardines from reputable fisheries that adhere to safety guidelines.