According to the FDA (u003ca aria-label=u0022Food and Drug Adminstration (opens in a new tab)u0022 href=u0022https://www.fda.gov/food/buy-store-serve-safe-food/selecting-and-serving-fresh-and-frozen-seafood-safelyu0022 target=u0022_blanku0022 rel=u0022noreferrer noopeneru0022 class=u0022ek-linku0022u003eFood and Drug Adminstrationu003c/au003e): u0022It's always best to cook seafood thoroughly to minimize the risk of foodborne illness. However, if you choose to eat raw fish anyway, one rule of thumb is to eat fish that has been previously frozen. Some species of fish can contain parasites, and freezing will kill any parasites that may be present. u0022