It's based in the fact that a lot of fish is delicate — like haddock, cod and other flaky white fish — and because cheese can overpower its flavor. But you can definitely mix cheese and seafood! Think lobster mac and cheese, shrimp alfredo, shrimp and feta bakes in Greece, these surf and turf sliders and more. This Smithsonian Magazine story does a deep dive on the super interesting history behind this idea!