Some seafood is higher in purines than others. The worst for people with gout are anchovies, codfish, haddock, herring, mackerel, mussels, roe (fish eggs), sardines, scallops, and trout. “Salmon appears to be an exception and a better choice of seafood for someone with gout,”
Most people find they can also eat limited amounts of certain shellfish — crab, lobster, oysters, and shrimp, which contain just a moderate amount of purine.