Filleted fish is a type of seafood dish that involves cutting the fish into thin slices and removing the bones. The two most common types of filleted fish are SOLE and SHAD, both of which have four letters in their names. SOLE is a flatfish found in the Atlantic and Pacific oceans, while SHAD is a type of herring found in the Atlantic Ocean. Both types of fish can be cooked in a variety of ways, including baking, frying, and grilling.