The responsibilities of a fish cutter, also known as a filleter, include cleaning and cutting fillets, shucking shellfish, scaling and trimming fish, and otherwise processing these seafood products so that they are ready for sale or for cooking in a restaurant. A fish cutter is usually an expert in the processing and preparation of seafood. As a fish cutter, you may also work as a meat butcher, or you may specialize only in seafood. In this career, you may work in a supermarket, grocery store, seafood processing plant, restaurant, or for a seafood wholesaler or fishmonger.