Raw Fish is a food item found in the Shipwrecked DLC. When killed, both White Whales and Blue Whales drop 4 Raw Fish. Also, the Tiger Shark drops 8 Raw Fish when killed. It can be used in multiple Crock Pot recipes, giving both a Fish Value and a half Meat Value. It is especially useful for the Surf 'n' Turf recipe since it complements both of its requirements, thus the remaining ingredients can be filled flexibly with whatever is more abundant(big meat or big fish).
Fish Steak is Raw Fish, Dogfish, or Swordfish that has been cooked on a Campfire, Fire Pit, Chiminea, or Star. Additionally, "Ballphin Free" Tuna drops a Fish Steak when opened. It can also be used in multiple Crock Pot recipes.