This document discusses fish and shellfish, dividing them into two categories. Fin fish have fins and internal skeletons, while shellfish have an external shell but no internal bone structure. It provides examples of common types of fish and shellfish. The document discusses the properties of fish, including how it has little connective tissue and cooks quickly. It provides tips for ensuring fish is cooked properly and not overcooked. Methods for cooking lean vs fatty fish are described. The document also covers cutting and filleting fish, varieties and characteristics of different types of fish, proper handling and storage, and types of shellfish. Finally, it lists several common fish cooking methods and dishes that will be demonstrated the next day.